C语言期末大作业15个（附源码）成绩管理系统 图书馆管理系统 学生打卡系统 超市信

C语言期末作业15个（上）

1、C语言学生成绩管理系统2、C语言图书馆管理系统（复杂版）3、C语言图书馆管理系统（简洁版）4、C语言停车管理系统（两个版本）5、C语言学生考勤系统6、C语言班级学生管理系统7、C语言超市收款系统8、C语言超市信息管理系统9、C语言货物管理系统10、C语言歌曲信息管理系统11、C语言职工信息管理系统源码12、C语言学生打卡系统13、C语言小学生计算机辅助教学系统14、C语言门禁系统15、C语言银行管理系统(文件操作)

1、C语言学生成绩管理系统

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#include<stdio.h> #include<string.h> #include<math.h> struct student {int num; char name[20]; float pingshi; float shiyan; float kaoshi; double zongping; }stu[4]; void main() {void a(); void b(); void c(); void d(); void e(); int n; while(n!=6) {printf("\t大学计算机基础成绩管理系统\n"); printf("1：输入一个班学生大学计算机基础成绩记录\n"); printf("2：显示所有成绩记录\n"); printf("3：计算并输出平均成绩，均方差\n"); printf("4：输出成绩与排名\n"); printf("5：结果存入文件chengji.txt\n"); printf("6：退出系统\n"); printf("输入选项代码:"); scanf("%d",&n); switch(n) {case 1:a();break; case 2:b();break; case 3:c();break; case 4:d();break; case 5:e();break; case 6:printf("\n*******************谢谢使用！*******************\n");break; break; } } getchar(); } /* 子 函 数*/ void a() /* 输入一个班的学生记录*/ {int i; for(i=0;i<4;i++) {printf("请输入学号 姓名 平时成绩 实验成绩 考试成绩："); scanf("%d%s%f%f%f",&stu[i].num,stu[i].name,&stu[i].pingshi,&stu[i].shiyan,&stu[i].kaoshi); }for(i=0;i<4;i++) stu[i].zongping=0.1*stu[i].pingshi+0.3*stu[i].shiyan+0.6*stu[i].kaoshi; } void b()/* 显示所有记录*/ {int i; printf("学号 姓名 平时成绩 实验成绩 考试成绩 总评成绩\n"); for(i=0;i<4;i++) printf("%d%14.2s%14.2f%14.2f%14.2f%14.2f\n",stu[i].num,stu[i].name,stu[i].pingshi,stu[i].shiyan,stu[i].kaoshi,stu[i].zongping); } void c()/* 求出全班平均成绩，显示均方差*/ {int a[4]={0,1,2,3}; int i,j; double total=0,pfc=0,bzc=0; double ave; for(i=0;i<4;i++) {total=total+stu[i].zongping; } ave=total/4.0; printf("总评平均成绩是%f\n",ave); for(i=0;i<4;i++) {pfc=pow((stu[i].zongping-ave),2)/4; } bzc=sqrt(pfc); printf("\n平方差是%f\n",pfc); printf("\n标准差是%f\n",bzc); } void d() {int a[4]={0,1,2,3}; int i,j,temp; for(j=0;j<3;j++) {for(i=0;i<3-j;i++) if(stu[a[i]].zongping>stu[a[i+1]].zongping) {temp=a[i];a[i]=a[i+1]; a[i+1]=temp; } } printf("顺序为:\n"); printf("学号 姓名 总评成绩\n"); for(i=0;i<4;i++) printf("%d%10.2s%15.2f\n",stu[a[i]].num,stu[a[i]].name,stu[a[i]].zongping); printf("\n"); } void e() {int i; FILE *fp; fp=fopen("chengji.txt","w"); fprintf(fp,"学号 姓名 平时成绩 实验成绩 考试成绩 总评成绩\n"); for(i=0;i<4;i++) fprintf(fp,"%d%14.2s%14.2f%14.2f%14.2f%14.2f\n",stu[i].num,stu[i].name,stu[i].pingshi,stu[i].shiyan,stu[i].kaoshi,stu[i].zongping); printf("\n\n*******************恭喜，保存完成！*******************\n\n"); }

2、C语言图书馆管理系统（复杂版）

流程图

#include<stdio.h>#include <io.h>int bookNumber = 1; //全局变量 表示图书的序号int usersNumber = 1; //表示读者编号char enter; //接收换行符//添加图书的函数void addBook(FILE *Book) {FILE *Book1; //当文件和书本都存在时需要新建文件来更改信息int judgeName = 0; //判断此书是否已经被存放int num = 1, readNum, readNumber; //书本的数量 存放读到的书本数量 读到的书本序号char name[20] = {0}, readName[20] = {0}; //存放图书名字 暂时存放读到的字符串名printf("请输入要添加的图书名：");for(int i = 0; i<20; i++) //从输入流取得需要添加的书本名字{if(i==0)scanf("%c%c", &enter,&name[i]);elsescanf("%c",&name[i]);if(name[i]==10) //将最后的换行符改为空{name[i]=0;break;}} if(access("d:/Book.txt",F_OK)==0) //access函数判断文件是否存在，存在返回值为0 使用的头文件为io{judgeName = 1;FILE *judge = fopen("d:/Book.txt", "r"); //读取数据文件，查找是否已经存在此书while(!feof(judge)){fscanf(judge, "%d %s %d", &readNumber, readName, &readNum); //由于readName已经表示地址，不需要取地址符fscanf(judge,"\n"); //读入换行符，准备下一行的读取if(strcmp(name, readName)==0) //发现已经存在此书后跳出循环{judgeName = 2; //为2时表示已经存在此书，需要新建一个文件来更改信息break;}}fclose(judge); //关闭用于判断而打开的文件bookNumber = readNumber+1;if(judgeName==1)Book = fopen("d:/Book.txt", "a"); //文件存在 且不存在相同书名时向后追加内容else if(judgeName==2){Book1 = fopen("d:/Book1.txt", "w"); //新建一个文件暂存Book中的信息，最后再返回源文件中Book = fopen("d:/Book.txt","r"); //只读打开原本的文件}}elseBook = fopen("d:/Book.txt","w"); //文件不存在时新建一个文件if (judgeName<2){fprintf(Book, "%d %s %d\n", bookNumber, name, num); //写入序号 书名 数量和换行符bookNumber++; fclose(Book);}else{while(!feof(Book)){fscanf(Book, "%d %s %d\n", &readNumber, readName, &readNum);if(strcmp(name, readName)==0)fprintf(Book1, "%d %s %d\n", readNumber, readName, readNum+1); //写入序号 书名 数量+1和换行符elsefprintf(Book1, "%d %s %d\n", readNumber, readName, readNum); //写入序号 书名 数量和换行符 }bookNumber++;fclose(Book); //关闭文件fclose(Book1);Book1 = fopen("d:/Book1.txt", "r");Book = fopen("d:/Book.txt", "w+"); //刷新原文件，再次写入正确数据while(!feof(Book1)){fscanf(Book1, "%d %s %d\n", &readNumber, readName, &readNum);fprintf(Book, "%d %s %d\n", readNumber, readName, readNum);}fclose(Book);fclose(Book1);remove("d:/Book1.txt"); //删除原文件 //rename("d:/Book1.txt", "d:/Book.txt"); //将更改后的文件改名为原数据文件}printf("添加成功！\n");}//修改图书信息函数void changeBook(FILE *Book) {while(1){char name[20] = {0}, readName[20] = {0};printf(" Edit Book Information \n");printf("[------------------------------------------]\n");printf("\t请选择需要修改的信息：\n 1.修改图书名称\n 2.修改图书数量\n 3.返回主菜单\n");printf("[------------------------------------------]\n");int function, readNumber, readNum, find = 0; //功能选择 读取到的序号 读取到的数量 是否找到此书//判断修改后的书名是否和原有的重复Book = fopen("d:/Book.txt","r"); //只读打开原文件int ifNumber, ifNum;char ifName[20] = {0};FILE *ifUserExisted = fopen("d:/Users1.txt","w");while(!feof(Book)){fscanf(Book, "%d %s %d\n", &ifNumber, ifName, &ifNum);fprintf(ifUserExisted, "%d %s %d\n", &ifNumber, ifName, ifNum); }fclose(ifUserExisted);fclose(Book);scanf("%d",&function);if(function == 3){remove("d:/Book1.txt"); //有时会多余创造了文件，需要删除 return;}Book = fopen("d:/Book.txt","r"); //只读打开原文件FILE *Book1 = fopen("d:/Book1.txt", "w"); //先新建一个文件存储更改后的信息printf("请输入需要更改的图书名：");for(int i = 0; i<20; i++) //从输入流取得需要添加的书本名字{if(i==0)scanf("%c%c", &enter,&name[i]);elsescanf("%c",&name[i]);if(name[i]==10) //将最后的换行符改为空{name[i]=0;break;}}if(function==1){while(!feof(Book)){fscanf(Book, "%d %s %d\n", &readNumber, readName, &readNum);if(strcmp(name, readName)==0){find = 1; //找到了此书printf("您要将书名%s更改为：", name);char changeName[20] = {0};for(int i = 0; i<20; i++) //从输入流取得需要更改的书本名字{if(i==0)scanf("%c",&changeName[i]);elsescanf("%c",&changeName[i]);if(changeName[i]==10) //将最后的换行符改为空{changeName[i]=0;break;}}ifUserExisted = fopen("d:/Users1.txt","r"); //判断更改后的名字是否会和已存在的书名冲突while(!feof(ifUserExisted)){fscanf(ifUserExisted, "%d %s %d\n", &ifNumber, ifName, &ifNum);if (strcmp(changeName, ifName)==0){printf("更改失败：已存在名称为%s的图书\n", changeName);fclose(ifUserExisted);fclose(Book); //关闭文件fclose(Book1);return;}}fprintf(Book1, "%d %s %d\n", readNumber, changeName, readNum); //写入序号 更改后的书名 数量和换行符}elsefprintf(Book1, "%d %s %d\n", readNumber, readName, readNum); //写入序号 书名 数量和换行符 }if(find==0) //若没找到此书{printf("没有找到此书！请重新输入\n");break;}fclose(Book); //关闭文件fclose(Book1);Book1 = fopen("d:/Book1.txt", "r");Book = fopen("d:/Book.txt", "w+"); //刷新原文件，再次写入正确数据while(!feof(Book1)){fscanf(Book1, "%d %s %d\n", &readNumber, readName, &readNum);fprintf(Book, "%d %s %d\n", readNumber, readName, readNum);}fclose(Book);fclose(Book1);remove("d:/Book1.txt"); //删除原文件 //rename("d:/Book1.txt", "d:/Book.txt"); //将更改后的文件改名为原数据文件 此方法成功率低！！！printf("更改成功!\n");}else if(function == 2){while(!feof(Book)){fscanf(Book, "%d %s %d\n", &readNumber, readName, &readNum);if(strcmp(name, readName)==0){find = 1; //找到了此书printf("您要将数量%d更改为：", readNum);int newNum = 0;scanf("%d",&newNum);fprintf(Book1, "%d %s %d\n", readNumber, readName, newNum); //写入序号 书名 更改后的数量和换行符}elsefprintf(Book1, "%d %s %d\n", readNumber, readName, readNum); //写入序号 书名 数量和换行符 }if(find==0) //若没找到此书{printf("没有找到此书！请重新输入");break;}fclose(Book); //关闭文件fclose(Book1);Book1 = fopen("d:/Book1.txt", "r");Book = fopen("d:/Book.txt", "w+"); //刷新原文件，再次写入正确数据while(!feof(Book1)){fscanf(Book1, "%d %s %d\n", &readNumber, readName, &readNum);fprintf(Book, "%d %s %d\n", readNumber, readName, readNum);}fclose(Book);fclose(Book1);remove("d:/Book1.txt"); //删除原文件 //rename("d:/Book1.txt", "d:/Book.txt"); //将更改后的文件改名为原数据文件 此方法易出现问题！！！printf("更改成功!\n");}else{printf("输入格式有误，请重新输入！");break;}}}//删除书籍的函数void delBook(FILE *Book){while(1){printf("请输入您想删除的图书名：(输入\"-r\"返回上一级)");char delName[20] = {0};for(int i = 0; i<20; i++) //从输入流取得需要删除的书本名字{//if(i==0)// scanf("%c%c", &enter,&delName[i]);//elsescanf("%c",&delName[i]);if(delName[i]==10) //将最后的换行符改为空{delName[i]=0;break;}}if(strcmp(delName, "-r")==0) //输入返回上一级的指示后返回return;int readNumber, readNum, find = 0;char readName[20] = {0};Book = fopen("d:/Book.txt","r");FILE *Book1 = fopen("d:/Book1.txt","w");while (!feof(Book)){fscanf(Book, "%d %s %d\n", &readNumber, readName, &readNum);if(strcmp(delName, readName)==0){find = 1; //找到了此书//因为要删除此条信息，所以不再向新文件中输出它}else{if(find==1)fprintf(Book1, "%d %s %d\n", readNumber-1, readName, readNum); //排在删除后的写入-1的序号 书名 数量和换行符 elsefprintf(Book1, "%d %s %d\n", readNumber, readName, readNum); //删除前的写入的序号 书名 数量和换行符 } }if(find==0) //若没找到此书{printf("没有找到此书！请重新输入\n");continue;}fclose(Book);fclose(Book1);Book1 = fopen("d:/Book1.txt", "r");Book = fopen("d:/Book.txt", "w+"); //刷新原文件，再次写入正确数据while(!feof(Book1)){fscanf(Book1, "%d %s %d\n", &readNumber, readName, &readNum);fprintf(Book, "%d %s %d\n", readNumber, readName, readNum);}fclose(Book);fclose(Book1);remove("d:/Book1.txt"); //删除原文件 printf("删除成功!\n");}}//展示全部图书的函数void showBook(FILE *Book){printf(" Library \n");printf("[------------------------------------------]\n");printf("\t序号\t书名\t\t数量\n");char readName[20] = {0};int readNumber, readNum;Book = fopen("d:/Book.txt", "r");while(!feof(Book)){fscanf(Book, "%d %s %d\n", &readNumber, readName, &readNum);printf("\t%d\t%s\t\t%d\n",readNumber, readName, readNum); }fclose(Book);printf("[------------------------------------------]\n");}//向管理员展示全部用户的函数void showUsers(FILE *Users){printf(" Users\n");printf("[------------------------------------------]\n");printf("\t序号\t姓名\t所借阅图书\n");char readName[20] = {0}, borrowBook[20] = {0};int readNumber;Users = fopen("d:/Users.txt", "r");while(!feof(Users)){fscanf(Users, "%d %s %s\n", &readNumber, readName, borrowBook);printf("\t%d\t%s\t%s\n",readNumber, readName, borrowBook); }fclose(Users);printf("[------------------------------------------]\n");}//添加用户函数 void addUsers(FILE *Users){FILE *Users1; //当文件和用户都存在时需要新建文件来更改信息int judgeName = 0; //判断此用户是否已经存在int num = 1, readNumber; // 存放读到的书本数量 读到的用户序号char name[20] = {0}, readName[20] = {0}, borrowBook[20] = {"None"},readBorrowBook[20] = {"None"}; //存放用户名字 暂时存放读到的字符串名printf("请输入要添加的用户名：");for(int i = 0; i<20; i++) //从输入流取得需要添加的用户名{if(i==0)scanf("%c%c", &enter,&name[i]);elsescanf("%c",&name[i]);if(name[i]==10) //将最后的换行符改为空{name[i]=0;break;}} if(access("d:/Users.txt",F_OK)==0) //access函数判断文件是否存在，存在返回值为0 使用的头文件为io{judgeName = 1;FILE *judge = fopen("d:/Users.txt", "r"); //读取数据文件，查找是否已经存在此用户while(!feof(judge)){fscanf(judge, "%d %s %s", &readNumber, readName, readBorrowBook); //由于readName已经表示地址，不需要取地址符fscanf(judge,"\n"); //读入换行符，准备下一行的读取if(strcmp(name, readName)==0) //发现已经存在此用户后跳出循环{printf("已经存在此用户，无法添加。"); //已经存在此用户，返回return;}}fclose(judge); //关闭用于判断而打开的文件usersNumber = readNumber+1;if(judgeName==1)Users = fopen("d:/Users.txt", "a"); //文件存在 且不存在相同用户时向后追加内容}elseUsers = fopen("d:/Users.txt","w"); //文件不存在时新建一个文件fprintf(Users, "%d %s %s\n", usersNumber, name, borrowBook); //写入序号 用户名 所借书和换行符usersNumber++; fclose(Users);printf("添加成功！\n");}//修改读者信息函数void changeUsers(FILE *Users) {while(1){char name[20] = {0}, readName[20] = {0}, borrowBook[20] = {"None"};printf(" Edit Reader Name \n");printf("[------------------------------------------]\n");printf("\t请选择需要修改的信息：\n 1.修改读者名称\n 2.返回主菜单\n");printf("[------------------------------------------]\n");int function, readNumber, find = 0; //功能选择 读取到的序号 是否找到此书Users = fopen("d:/Users.txt","r"); //只读打开原文件 //此处创建ifUserExisted，一会用于查找是否存在相同的名字int ifNumber;char ifName[20] = {0}, ifBorrow[20] = {0};FILE *ifUserExisted = fopen("d:/Book1.txt","w");while(!feof(Users)){fscanf(Users, "%d %s %s\n", &ifNumber, ifName, ifBorrow);fprintf(ifUserExisted, "%d %s %s\n", &ifNumber, ifName, ifBorrow); }fclose(ifUserExisted);fclose(Users);Users = fopen("d:/Users.txt","r"); //只读打开原文件scanf("%d",&function);if(function == 2){remove("d:/Users1.txt"); //有时会多余创造了文件，需要删除 return;}FILE *Users1 = fopen("d:/Users1.txt", "w"); //先新建一个文件存储更改后的信息printf("请输入需要更改的用户名：");for(int i = 0; i<20; i++) //从输入流取得需要更改的读者名字{if(i==0)scanf("%c%c", &enter,&name[i]);elsescanf("%c",&name[i]);if(name[i]==10) //将最后的换行符改为空{name[i]=0;break;}}if(function==1){while(!feof(Users)){fscanf(Users, "%d %s %s\n", &readNumber, readName, borrowBook);if(strcmp(name, readName)==0){find = 1; //找到了此读者printf("您要将读者名\"%s\"更改为：", name);char changeName[20] = {0};for(int i = 0; i<20; i++) //从输入流取得需要更改的用户名字{if(i==0)scanf("%c",&changeName[i]);elsescanf("%c",&changeName[i]);if(changeName[i]==10) //将最后的换行符改为空{changeName[i]=0;break;}}ifUserExisted = fopen("d:/Book1.txt","r"); //判断更改后的名字是否会和存在的用户名冲突while(!feof(ifUserExisted)){fscanf(ifUserExisted, "%d %s %s\n", &ifNumber, ifName, ifBorrow);if (strcmp(changeName, ifName)==0){printf("更改失败：已存在名称为%s的读者\n", changeName);fclose(ifUserExisted);fclose(Users); //关闭文件fclose(Users1);return;}}fprintf(Users1, "%d %s %s\n", readNumber, changeName, borrowBook); //写入序号 更改后的读者名 所借书籍和换行符}elsefprintf(Users1, "%d %s %s\n", readNumber, readName, borrowBook); //写入序号 书名 数量和换行符 }if(find==0) //若没找到此读者{printf("没有找到此读者！请重新输入\n");break;}fclose(Users); //关闭文件fclose(Users1);Users1 = fopen("d:/Users1.txt", "r");Users = fopen("d:/Users.txt", "w+"); //刷新原文件，再次写入正确数据while(!feof(Users1)){fscanf(Users1, "%d %s %s\n", &readNumber, readName, borrowBook);fprintf(Users, "%d %s %s\n", readNumber, readName, borrowBook);}fclose(Users);fclose(Users1);remove("d:/Users1.txt"); //删除原文件 //rename("d:/Book1.txt", "d:/Book.txt"); //将更改后的文件改名为原数据文件 此方法成功率低！！！printf("更改成功!\n");}else{printf("输入格式有误，请重新输入！\n");break;}}}//删除用户的函数void delUsers(FILE *Users){while(1){printf("请输入您想删除的读者名：(输入\"-r\"返回上一级)");char delName[20] = {0};for(int i = 0; i<20; i++) //从输入流取得需要删除的用户名字{//if(i==0)// scanf("%c%c", &enter,&delName[i]);//elsescanf("%c",&delName[i]);if(delName[i]==10) //将最后的换行符改为空{delName[i]=0;break;}}if(strcmp(delName, "-r")==0) //输入返回上一级的指示后返回return;int readNumber, find = 0;char readName[20] = {0}, borrowBook[20] = {"None"};Users = fopen("d:/Users.txt","r");FILE *Users1 = fopen("d:/Users1.txt","w");while (!feof(Users)){fscanf(Users, "%d %s %s\n", &readNumber, readName, borrowBook);if(strcmp(delName, readName)==0){find = 1; //找到了此读者//因为要删除此条信息，所以不再向新文件中输出它}else{if(find==1)fprintf(Users1, "%d %s %s\n", readNumber-1, readName, borrowBook); //排在删除后的写入-1的序号 读者名 所借书和换行符 elsefprintf(Users1, "%d %s %s\n", readNumber, readName, borrowBook); //删除前的写入的序号 读者名 所借书和换行符 } }if(find==0) //若没找到此读者{printf("没有找到此读者！请重新输入\n");continue;}fclose(Users1);fclose(Users);Users1 = fopen("d:/Users1.txt", "r");Users = fopen("d:/Users.txt", "w+"); //刷新原文件，再次写入正确数据while(!feof(Users1)){fscanf(Users1, "%d %s %s\n", &readNumber, readName, borrowBook);fprintf(Users, "%d %s %s\n", readNumber, readName, borrowBook);}fclose(Users1);fclose(Users);remove("d:/Users1.txt"); //删除原文件 printf("删除成功!\n");}}//借阅函数void borrowBooking(char readerName[]){printf("请输入您想借阅的图书名：");char name[20] = {0};for(int i = 0; i<20; i++) //从输入流取得图书名{if(i==0)scanf("%c%c", &enter,&name[i]);elsescanf("%c",&name[i]);if(name[i]==10) //将最后的换行符改为空{name[i]=0;break;}}char readName[20] = {0};int readNumber, readNum, find = 0;//更改被借阅的图书的信息FILE *Book = fopen("d:/Book.txt", "r");FILE *Book1 = fopen("d:/Book1.txt", "w");while (!feof(Book)){fscanf(Book, "%d %s %d\n", &readNumber, readName, &readNum);if(strcmp(name, readName)==0){find = 1;if(readNum<1){printf("借阅失败:无剩余可借阅的%s！\n", readName);return;}fprintf(Book1, "%d %s %d\n", readNumber, readName, readNum-1); //若找到需要借阅的图书，则在此书数量上减1 } elsefprintf(Book1, "%d %s %d\n", readNumber, readName, readNum); //删除前的写入的序号 读者名 所借书和换行符 }if(find==0) //若没找到此书{printf("借阅失败:没有找到此书！\n");return;}fclose(Book);fclose(Book1);Book1 = fopen("d:/Book1.txt", "r");Book = fopen("d:/Book.txt", "w+"); //刷新原文件，再次写入正确数据while(!feof(Book1)){fscanf(Book1, "%d %s %d\n", &readNumber, readName, &readNum);fprintf(Book, "%d %s %d\n", readNumber, readName, readNum);}fclose(Book1);fclose(Book);remove("d:/Book1.txt"); //删除原文件 //更改读者的信息FILE *Users = fopen("d:/Users.txt", "r");FILE *Users1 = fopen("d:/Users1.txt", "w");char borrowBook[20] = {"None"};while (!feof(Users)){fscanf(Users, "%d %s %s\n", &readNumber, readName, borrowBook);if(strcmp(readerName, readName)==0)fprintf(Users1, "%d %s %s\n", readNumber, readName, name); //在读者的借阅图书上写上所借阅的图书名 elsefprintf(Users1, "%d %s %s\n", readNumber, readName, borrowBook); }fclose(Users1);fclose(Users);Users1 = fopen("d:/Users1.txt", "r");Users = fopen("d:/Users.txt", "w+"); //刷新原文件，再次写入正确数据while(!feof(Users1)){fscanf(Users1, "%d %s %s\n", &readNumber, readName, borrowBook);fprintf(Users, "%d %s %s\n", readNumber, readName, borrowBook);}fclose(Users1);fclose(Users);remove("d:/Users1.txt"); //删除原文件 有时候还是删不掉printf("借阅成功！\n"); }//还书函数void returnBooking(char readerName[], char borrowBook[]){char readName[20] = {0};int readNumber, readNum, find = 0;//更改被还回的图书的信息FILE *Book = fopen("d:/Book.txt", "r");FILE *Book1 = fopen("d:/Book1.txt", "w");while (!feof(Book)){fscanf(Book, "%d %s %d\n", &readNumber, readName, &readNum);if(strcmp(borrowBook, readName)==0){fprintf(Book1, "%d %s %d\n", readNumber, readName, readNum+1); //若找到被还的图书，则在此书数量上加1 find = 1;}elsefprintf(Book1, "%d %s %d\n", readNumber, readName, readNum); //不是还回的书 }fclose(Book);fclose(Book1);Book1 = fopen("d:/Book1.txt", "r");Book = fopen("d:/Book.txt", "w+"); //刷新原文件，再次写入正确数据while(!feof(Book1)){fscanf(Book1, "%d %s %d\n", &readNumber, readName, &readNum);fprintf(Book, "%d %s %d\n", readNumber, readName, readNum);}bookNumber = readNumber+1;fclose(Book1);fclose(Book);remove("d:/Book1.txt"); //删除原文件if(find==0) //还书时没有书城中没有此书，直接添加一本{FILE *Book;Book = fopen("d:/Book.txt", "a"); fprintf(Book, "%d %s 1\n", bookNumber, borrowBook); //写入序号 书名 数量和换行符bookNumber++; fclose(Book);}//更改读者的信息FILE *Users = fopen("d:/Users.txt", "r");FILE *Users1 = fopen("d:/Users1.txt", "w");char rborrowBook[20] = {"None"};while (!feof(Users)){fscanf(Users, "%d %s %s\n", &readNumber, readName, rborrowBook);if(strcmp(readerName, readName)==0)fprintf(Users1, "%d %s %s\n", readNumber, readName, "None"); //还回书后所借阅图书变为"None" elsefprintf(Users1, "%d %s %s\n", readNumber, readName, rborrowBook); }fclose(Users1);fclose(Users);Users1 = fopen("d:/Users1.txt", "r");Users = fopen("d:/Users.txt", "w+"); //刷新原文件，再次写入正确数据while(!feof(Users1)){fscanf(Users1, "%d %s %s\n", &readNumber, readName, rborrowBook);fprintf(Users, "%d %s %s\n", readNumber, readName, rborrowBook);}fclose(Users1);fclose(Users);remove("d:/Users1.txt"); //删除原文件 有时候还是删不掉printf("成功还回%s\n", borrowBook);}//单独查询功能，根据编号或书名查询书被哪些人借走void searchBook(){while (1){int function = 0;FILE *Book = fopen("d:/Book.txt", "r");FILE *Users = fopen("d:/Users.txt", "r");char readerName[20] = {0}, bookName[20] = {0}, borrowBook[20] = {0}, name[20] = {0};int bookNumber, bookNum, find = 0, readerNumber;printf(" Search \n");printf("[------------------------------------------]\n");printf("\t\t请选择查询功能：\n\t1.根据编号查询\n\t2.根据书名查询\n\t3.返回主界面\n");printf("[------------------------------------------]\n");scanf("%d",&function); // 输入需要的功能switch (function){case 1:printf("您要查找的书序号是：");scanf("%d",&function); // 输入需要查找的图书编号while(!feof(Book)){fscanf(Book, "%d %s %d\n", &bookNumber, bookName, &bookNum); //由于bookName已经表示地址，不需要取地址符if(bookNumber==function) //发现查找的书后跳出循环{find = 1;//找到书break;}}if(find==0){printf("没有找到编号为%d的图书。\n",function);break;}printf("Search Result\n");printf("[------------------------------------------]\n");find = 0;//需要在查找谁借阅时再次使用printf("\t编号：\t\t%d\n\t书名：\t\t%s\n\t剩余数量：\t%d\n\t",bookNumber, bookName, bookNum);while (!feof(Users)){fscanf(Users, "%d %s %s\n", &readerNumber, readerName, borrowBook);//遍历读者查找谁借阅了这本书 if (strcmp(borrowBook, bookName)==0){if(find==0){find = 1;printf("借阅此书的读者：");printf("%s",readerName);}elseprintf(" ,%s",readerName);}}if(find==0)printf("还没有读者借阅此书。\n");elseprintf("\n");printf("[------------------------------------------]\n");printf("输入回车返回...\n");enter = getchar();enter = getchar();break;case 2:printf("您要查找的书名是：");scanf("%s",name); // 输入需要查找的图书名while(!feof(Book)){fscanf(Book, "%d %s %d\n", &bookNumber, bookName, &bookNum); //由于bookName已经表示地址，不需要取地址符if(strcmp(bookName, name)==0) //发现查找的书后跳出循环{find = 1;//找到书break;}}if(find==0){printf("没有找到名称为%s的图书。\n",name);break;}printf("Search Result\n");printf("[------------------------------------------]\n");find = 0;//需要在查找谁借阅时再次使用printf("\t编号：\t\t%d\n\t书名：\t\t%s\n\t剩余数量：\t%d\n\t",bookNumber, bookName, bookNum);while (!feof(Users)){fscanf(Users, "%d %s %s\n", &readerNumber, readerName, borrowBook);//遍历读者查找谁借阅了这本书 if (strcmp(borrowBook, bookName)==0){if(find==0){find = 1;printf("借阅此书的读者：");printf("%s",readerName);}elseprintf(" ,%s",readerName);}}if(find==0)printf("还没有读者借阅此书。\n");elseprintf("\n");printf("[------------------------------------------]\n");printf("输入回车返回...\n");enter = getchar();enter = getchar();break;case 3:return;default:printf("您输入的格式有误，请重新输入\n");break;}fclose(Book);fclose(Users);}}int main(int argc, char *argv[]) //需要从命令行读入参数{char identity1[] = "-u"; //读者身份char identity2[] = "-a"; //管理员身份FILE *Book, *Users; //两个文件分别存储图书信息和读者信息。int function1, function2; //功能选项/*调试用char readerName[20] = {0};int test = 0;scanf("%d %s",&test, readerName);if(test==1)*/if(strcmp(argv[1], identity2)==0) //管理员操作界面{char Administrator[20] = "Zhang";if(strcmp(Administrator, argv[2])==0){while(1){printf("menu\n");printf("[------------------------------------------]\n");printf("管理员您好！请选择您要使用的功能:\n 1.新增或修改图书信息\n 2.新增或修改读者信息\n 3.查看全部馆藏书籍\n 4.查看全部读者及其借阅信息\n 5.图书详情查询\n 6.结束程序\n");printf("[------------------------------------------]\n");scanf("%d",&function1); switch (function1){case 1: //更改图书信息printf(" Books \n");printf("[------------------------------------------]\n");printf("\t请选择要对图书进行的操作：\n 1.添加图书信息\n 2.修改图书信息\n 3.删除图书信息\n 4.返回主菜单\n");printf("[------------------------------------------]\n");scanf("%d",&function2); //输入第二级操作指令switch (function2){case 1:addBook(Book); //调用添加图书函数break;case 2:changeBook(Book); //修改函数break;case 3:scanf("%c",&enter);delBook(Book); //删除函数break;case 4:break;default:printf("输入的值令有误，请重新输入");break;}break;case 2: //更改读者信息printf(" Readers \n");printf("[------------------------------------------]\n");printf("\t请选择要对用户进行的操作：\n 1.添加用户信息\n 2.修改用户信息\n 3.删除用户信息\n");printf("[------------------------------------------]\n");scanf("%d",&function2); //输入第二级操作指令switch (function2){case 1:addUsers(Users); //添加用户信息break;case 2:changeUsers(Users); //修改用户信息break;case 3:scanf("%c",&enter);delUsers(Users); //删除用户信息break;default:printf("输入的值令有误，请重新输入");break;}break;case 3:showBook(Book);printf("输入回车返回...\n");enter = getchar();enter = getchar();break;case 4:showUsers(Users);printf("输入回车返回...\n");enter = getchar();enter = getchar();break;case 5:searchBook();break;case 6:printf("感谢您的使用，再见！");return 0;default:printf("输入格式有误，请重新输入!");break;}}}elseprintf("管理员名有误，请重新输入！");}/*else if(test == 2)*/ else if (strcmp(argv[1], identity1)==0) //读者的操作界面{char readName[20] = {0}, borrowBook[20] = {"None"};int readNumber,find = 0;FILE *Users = fopen("d:/Users.txt","r"); //需要判断是否存在此用户while (!feof(Users)){fscanf(Users, "%d %s %s\n", &readNumber, readName, borrowBook);if(strcmp(argv[2], readName)==0){find = 1;break;}}fclose(Users);if(find==0){printf("不存在用户名为%s的读者！", argv[2]);return 0;}while (1){FILE *Users = fopen("d:/Users.txt","r"); //刷新用户的借阅信息while (!feof(Users)){fscanf(Users, "%d %s %s\n", &readNumber, readName, borrowBook);if(strcmp(argv[2], readName)==0)break;}fclose(Users);printf("menu\n");printf("[------------------------------------------]\n");printf("\t读者%s您好！请选择您要使用的功能:\n 1.借阅图书\n 2.还回图书\n 3.查看全部馆藏书籍\n 4.结束程序\n", argv[2]);printf("[------------------------------------------]\n");scanf("%d",&function1); switch (function1){case 1: //借阅图书if(strcmp(borrowBook, "None")==0)borrowBooking(argv[2]);elseprintf("您已经借阅图书，请先还书再进行借阅操作。\n");printf("输入回车返回...\n");enter = getchar();enter = getchar();break;case 2: //还书if(strcmp(borrowBook, "None")!=0)returnBooking(argv[2], borrowBook);elseprintf("您当前还没有借阅图书。\n");printf("输入回车返回...\n");enter = getchar();enter = getchar();break;case 3:showBook(Book);printf("输入回车返回...\n");enter = getchar();enter = getchar();break;case 4:printf("感谢您的使用，再见！");return 0;default:printf("输入格式有误，请重新输入!");break;}}}elseprintf("您输入的格式有误，请重新输入!");return 0;}

3、C语言图书馆管理系统（简洁版）

#include<stdio.h> #include<math.h> #include<string.h> #include<stdlib.h> struct books_list {char author[20]; /*作者名*/ char bookname[20]; /*书名*/ char publisher[20]; /*出版单位*/ char pbtime[15]; /*出版时间*/ char loginnum[10]; /*登陆号*/ float price; /*价格*/ char classfy[10]; /*分类号*/ struct books_list * next; /*链表的指针域*/ }; struct books_list * Create_Books_Doc(); /*新建链表*/ void InsertDoc(struct books_list * head); /*插入*/ void DeleteDoc(struct books_list * head , int num);/*删除*/ void Print_Book_Doc(struct books_list * head);/*浏览*/ void search_book(struct books_list * head); /*查询*/ void save(struct books_list * head);/*保存数据至文件*/ /*新建链表头节点*/ struct books_list * Create_Books_Doc() {struct books_list * head; head=(struct books_list *)malloc(sizeof(struct books_list)); /*分配头节点空间*/ head->next=NULL; /*头节点指针域初始化，定为空*/ return head; } /*保存数据至文件*/ void save(struct books_list * head) {struct books_list *p; FILE *fp; p=head; fp=fopen("data.txt","w+"); /*以写方式新建并打开 data.txt文件*/ fprintf(fp,"┏━━━┳━━━━━┳━━━━━┳━━━━━┳━━━━━━┳━━━┳━━━━┓\n"); /*向文件输出表格*/ fprintf(fp,"┃登录号┃ 书 名 ┃ 作 者┃ 出版单位 ┃ 出版时间 ┃分类号┃ 价格 ┃\n"); fprintf(fp,"┣━━━╋━━━━━╋━━━━━╋━━━━━╋━━━━━━╋━━━╋━━━━┫\n"); /*指针从头节点开始移动，遍历至尾结点，依次输出图书信息*/ while(p->next!= NULL) {p=p->next; fprintf(fp,"┃%-6.6s┃%-10.10s┃%-10.10s┃%-10.10s┃%-12.12s┃%-6.6s┃%.2f ┃\n",p->loginnum,p->bookname,p->author,p->publisher,p->pbtime,p->classfy,p->price); } fprintf(fp,"┗━━━┻━━━━━┻━━━━━┻━━━━━┻━━━━━━┻━━━┻━━━━┛\n"); fclose(fp); printf(" 已将图书数据保存到 data.txt 文件\n"); } /*插入*/ void InsertDoc(struct books_list *head) {/*定义结构体指针变量 s指向开辟的新结点首地址 p为中间变量*/ struct books_list *s, *p; char flag='Y'; /*定义flag,方便用户选择重复输入*/ p=head; /*遍历到尾结点，p指向尾结点*/ while(p->next!= NULL) {p=p->next; } /*开辟新空间,存入数据,添加进链表*/ while(flag=='Y'||flag=='y') {s=(struct books_list *)malloc(sizeof(struct books_list)); printf("\n 请输入图书登陆号:"); fflush(stdin); scanf("%s",s->loginnum); printf("\n 请输入图书书名:"); fflush(stdin); scanf("%s",s->bookname); printf("\n 请输入图书作者名:"); fflush(stdin); scanf("%s",s->author); printf("\n 请输入图书出版社:"); fflush(stdin); scanf("%s",s->publisher); printf("\n 请输入图书出版时间:"); fflush(stdin); scanf("%s",s->pbtime); printf("\n 请输入图书分类号:"); fflush(stdin); scanf("%s",s->classfy); printf("\n 请输入图书价格:"); fflush(stdin); scanf("%f",&s->price); printf("\n"); p->next=s; /*将新增加的节点添加进链表*/ p=s; /*p指向尾节点，向后移*/ s->next=NULL; printf(" ━━━━ 添加成功！━━━━"); printf("\n 继续添加？(Y/N):"); fflush(stdin); scanf("%c",&flag); printf("\n"); if(flag=='N'||flag=='n') {break;} else if(flag=='Y'||flag=='y') {continue;} } save(head); /*保存数据至文件*/ return; } /*查询操作*/ void search_book(struct books_list *head) {struct books_list * p; char temp[20]; p=head; if(head==NULL || head->next==NULL) /*判断数据库是否为空*/ {printf(" ━━━━ 图书库为空！━━━━\n"); } else {printf("请输入您要查找的书名: "); fflush(stdin); scanf("%s",temp); /*指针从头节点开始移动，遍历至尾结点，查找书目信息*/ while(p->next!= NULL) {p=p->next; if(strcmp(p->bookname,temp)==0) {printf("\n图书已找到!\n"); printf("\n"); printf("登录号: %s\t\n",p->loginnum); printf("书名: %s\t\n",p->bookname); printf("作者名: %s\t\n",p->author); printf("出版单位: %s\t\n",p->publisher); printf("出版时间: %s\t\n",p->pbtime); printf("分类号: %s\t\n",p->classfy); printf("价格: %.2f\t\n",p->price); } if(p->next==NULL) {printf("\n查询完毕!\n"); } } } return; } /*浏览操作*/ void Print_Book_Doc(struct books_list * head) {struct books_list * p; if(head==NULL || head->next==NULL) /*判断数据库是否为空*/ {printf("\n ━━━━ 没有图书记录! ━━━━\n\n"); return; } p=head; printf("┏━━━┳━━━━━┳━━━━━┳━━━━━┳━━━━━━┳━━━┳━━━━┓\n"); printf("┃登录号┃ 书 名 ┃ 作 者┃ 出版单位 ┃ 出版时间 ┃分类号┃ 价格 ┃\n"); printf("┣━━━╋━━━━━╋━━━━━╋━━━━━╋━━━━━━╋━━━╋━━━━┫\n"); /*指针从头节点开始移动，遍历至尾结点，依次输出图书信息*/ while(p->next!= NULL) {p=p->next; printf("┃%-6.6s┃%-10.10s┃%-10.10s┃%-10.10s┃%-12.12s┃%-6.6s┃%.2f ┃\n",p->loginnum,p->bookname,p->author,p->publisher,p->pbtime,p->classfy,p->price); /*循环输出表格*/ } printf("┗━━━┻━━━━━┻━━━━━┻━━━━━┻━━━━━━┻━━━┻━━━━┛\n"); printf("\n"); } /*删除操作*/ void DeleteDoc(struct books_list * head) {struct books_list *s,*p; /*s为中间变量，p为遍历时使用的指针*/ char temp[20]; int panduan; /*此变量用于判断是否找到了书目*/ panduan=0; p=s=head; printf(" [请输入您要删除的书名]:"); scanf("%s",temp); /*遍历到尾结点*/ while(p!= NULL) {if(strcmp(p->bookname,temp)==0) {panduan++; break; } p=p->next; } if(panduan==1) {for(;s->next!=p;) /*找到所需删除卡号结点的上一个结点*/ {s=s->next; } s->next=p->next; /*将后一节点地址赋值给前一节点的指针域*/ free(p); printf("\n ━━━━ 删除成功! ━━━━\n"); } else /*未找到相应书目*/ {printf(" 您输入的书目不存在，请确认后输入!\n"); } return; } int main() {struct books_list * head; char choice; head=NULL; for(;;) /*实现反复输入选择*/ {printf(" ┏━┓━━━━━━━━━━━━━━━━━━━┏━┓\n"); printf(" ┃ ┃ tony 图书馆管理系统 ┃ ┃\n"); printf(" ┃ ┗━━━━━━━━━━━━━━━━━━━┛ ┃\n"); printf(" ┃ [1]图书信息录入 ┃\n"); printf(" ┃ ┃\n"); printf(" ┃ [2]图书信息浏览 ┃\n"); printf(" ┃ ┃\n"); printf(" ┃ [3]图书信息查询 ┃\n"); printf(" ┃ ┃\n"); printf(" ┃ [4]图书信息删除 ┃\n"); printf(" ┃ ┃\n"); printf(" ┃ [5]退出系统 ┃\n"); printf(" ┃ ┃\n"); printf(" ┃ ┃\n"); printf(" ┗━━━━━━━━━━━━━━━━━━━━━━━┛\n"); printf(" 请选择:"); fflush(stdin); scanf("%c",&choice); if(choice=='1') {if(head==NULL) {head=Create_Books_Doc(); } InsertDoc(head); } else if(choice=='2') {Print_Book_Doc(head); } else if(choice=='3') {search_book(head); } else if(choice=='4') {DeleteDoc(head); } else if(choice=='5') {printf("\n"); printf(" ━━━━━━━━ 感谢使用图书管理系统 ━━━━━━━━\n"); break; } else {printf(" ━━━━ 输入错误，请重新输入！━━━━\n"); } } return 0; }

4、C语言停车管理系统（两个版本）

#include "stdio.h" #include "stdlib.h" #include "string.h" #define MAX 2 //车库容量 #define price 0.05 //每车每分钟费用 typedef struct time //时间结点 {int hour; int min; }Time; typedef struct node //车辆信息结点 {char num[10]; Time reach; Time leave; }CarNode; typedef struct NODE //模拟车站 {CarNode *stack[MAX+1]; int top; }SeqStackCar; typedef struct car {CarNode *data; struct car *next; }QueueNode; typedef struct Node //模拟通道 {QueueNode *head; QueueNode *rear; }LinkQueueCar; void InitStack(SeqStackCar *); //初始化栈 int InitQueue(LinkQueueCar *); //初始化便道 int arrival(SeqStackCar *,LinkQueueCar *); //车辆到达 void leave(SeqStackCar *,SeqStackCar *,LinkQueueCar *); //车辆离开 void list(SeqStackCar,LinkQueueCar); //显示存车信息 int main(void) {SeqStackCar Enter,Temp; LinkQueueCar Wait; int ch; InitStack(&Enter); //初始化车站 InitStack(&Temp); //初始化让路的临时栈 InitQueue(&Wait); //初始化通道 while(1) {printf("\n 1. The car arrive\n"); printf(" 2. The car leave\n"); printf(" 3. The schedule\n"); printf(" 4. Exit\n"); while(1) {scanf("%d",&ch); if(ch>=1 && ch<=4) break; else printf("\nPlease choose： 1|2|3|4."); } switch(ch) {case 1: arrival(&Enter,&Wait); //车辆到达 break; case 2: leave(&Enter,&Temp,&Wait); //车辆离开 break; case 3: list(Enter,Wait);break; //列表打印信息 case 4: exit(0); //退出主程序 default: break; } } } void InitStack(SeqStackCar *s) //初始化栈 {int i; s->top=0; for(i=0;i<=MAX;i++) s->stack[s->top]=NULL; } int InitQueue(LinkQueueCar *Q) //初始化便道 {Q->head=(QueueNode *)malloc(sizeof(QueueNode)); if(Q->head!=NULL) {Q->head->next=NULL; Q->rear=Q->head; return 1; } else return -1; } void print(CarNode *p,int room) //打印出站车的信息 {int A1,A2,B1,B2; printf("\nplease input thedepart time:/**:**/"); scanf("%d:%d",&(p->leave.hour),&(p->leave.min)); printf("\nthe number of the car:"); puts(p->num); printf("\nthe time the car arrive: %d:%d",p->reach.hour,p->reach.min); printf("the depart time: %d:%d",p->leave.hour,p->leave.min); A1=p->reach.hour; A2=p->reach.min; B1=p->leave.hour; B2=p->leave.min; printf("\nthe fee: %2.1f元",((B1-A1)*60+(B2-A2))*price); free(p); } int arrival(SeqStackCar *Enter,LinkQueueCar *W) //车辆到达 {CarNode *p; QueueNode *t; p=(CarNode *)malloc(sizeof(CarNode)); flushall(); printf("\ninput the number of the car(例:陕A1234):"); gets(p->num); if(Enter->top<MAX) //车场未满，车进车场 {Enter->top++; printf("\nthe place of the car.",Enter->top); printf("\nthe time thecar arrive:/**:**/"); scanf("%d:%d",&(p->reach.hour),&(p->reach.min)); Enter->stack[Enter->top]=p; return 1; } else //车场已满，车进便道 {printf("\n该车须在便道等待!"); t=(QueueNode *)malloc(sizeof(QueueNode)); t->data=p; t->next=NULL; W->rear->next=t; W->rear=t; return 1; } } void leave(SeqStackCar *Enter,SeqStackCar *Temp,LinkQueueCar *W) //车辆离开 {int i, room; CarNode *p,*t; QueueNode *q; //判断车场内是否有车 if(Enter->top>0) //有车 {while(1) //输入离开车辆的信息 {printf("\n请输入车在车场的位置/1--%d/：",Enter->top); scanf("%d",&room); if(room>=1&&room<=Enter->top) break; } while(Enter->top>room) //车辆离开 {Temp->top++; Temp->stack[Temp->top]=Enter->stack[Enter->top]; Enter->stack[Enter->top]=NULL; Enter->top--; } p=Enter->stack[Enter->top]; Enter->stack[Enter->top]=NULL; Enter->top--; while(Temp->top>=1) {Enter->top++; Enter->stack[Enter->top]=Temp->stack[Temp->top]; Temp->stack[Temp->top]=NULL; Temp->top--; } print(p,room); //判断通道上是否有车及车站是否已满 if((W->head!=W->rear)&&Enter->top<MAX) //便道的车辆进入车场 {q=W->head->next; t=q->data; Enter->top++; printf("\n便道的%s号车进入车场第%d位置.",t->num,Enter->top); printf("\n请输入现在的时间/**:**/:"); scanf("%d:%d",&(t->reach.hour),&(t->reach.min)); W->head->next=q->next; if(q==W->rear) W->rear=W->head; Enter->stack[Enter->top]=t; free(q); } else printf("\n便道里没有车.\n"); } else printf("\n车场里没有车."); //没车 } void list1(SeqStackCar *S) //列表显示车场信息 {int i; if(S->top>0) //判断车站内是否有车 {printf("\n车场:"); printf("\n 位置 到达时间 车牌号\n"); for(i=1;i<=S->top;i++) {printf(" %d ",i); printf("%d:%d ",S->stack[i]->reach.hour,S->stack[i]->reach.min); puts(S->stack[i]->num); } } else printf("\n车场里没有车"); } void list2(LinkQueueCar *W) //列表显示便道信息 {QueueNode *p; p=W->head->next; if(W->head!=W->rear) //判断通道上是否有车 {printf("\n等待车辆的号码为:"); while(p!=NULL) {puts(p->data->num); p=p->next; } } else printf("\n便道里没有车."); } void list(SeqStackCar S,LinkQueueCar W) {int flag,tag; flag=1; while(flag) {printf("\n请选择 1|2|3:"); printf("\n1.车场\n2.便道\n3.返回\n"); while(1) {scanf("%d",&tag); if(tag>=1 || tag<=3) break; else printf("\n请选择 1|2|3:"); } switch(tag) {case 1: list1(&S); break; //列表显示车场信息 case 2: list2(&W); break; //列表显示便道信息 case 3: flag=0; break; default: break; } } }

第二种版本

#include "stdio.h" #include "stdlib.h" #define SIZE 10 typedef struct {int hour; int min; }time; //车的时间结构体 typedef struct {int num; int position; time t; float money; }Car; //车的信息 typedef struct {Car elem[SIZE+1]; int top; //指向便道中的第一个空位 } Stack;//创建堆栈 typedef struct Node {Car data; struct Node *next; }CQueueNode; //建立过道的程序： typedef struct {CQueueNode *front; CQueueNode *rear; }LinkQueue; //设置的便道 //便道初始化程序 void InitQueue(LinkQueue *Q) {Q->front=(CQueueNode*)malloc(sizeof(CQueueNode)); //使mallo返回的指针转换为指向CQueueNode类型数据的指针 if(Q->front!=NULL) {Q->rear=Q->front; Q->front->next=NULL; } } int EnterQueue(LinkQueue *Q,Car *t) {CQueueNode *NewNode; NewNode=(CQueueNode*)malloc(sizeof(CQueueNode)); //给便道申请空间 if(NewNode!=NULL) {NewNode->data.num=t->num; NewNode->data.t.hour=t->t.hour; NewNode->data.t.min=t->t.min; NewNode->next=NULL; Q->rear->next=NewNode; Q->rear=NewNode; return 1; } else return 0; } void InitStack(Stack *S) {S->top=0; } //确保堆栈为空 void Push(Stack *S,Car *r) //便道中的车入库 {S->top++; S->elem[S->top].num=r->num; r->position=S->elem[S->top].position=S->top; S->elem[S->top].t.hour=r->t.hour; S->elem[S->top].t.min=r->t.min; } int IsEmpty(Stack* S) //判断车库是否为空 {return(S->top==0?1:0); } int IsFull(Stack *S) //判断车库是否为满 {return(S->top==SIZE?1:0); } int GetTop(Stack *S,Car *n) //车离开车库 {n->num=S->elem[S->top].num; n->position=S->elem[S->top].position; n->t.hour=S->elem[S->top].t.hour; n->t.min=S->elem[S->top].t.min; return 1; } int DeleteQueue(LinkQueue *Q,Car *x) {CQueueNode *p; if(Q->front==Q->rear) return 0; //判断便道为空 p=Q->front->next; //将便道中的车放入车库 Q->front->next=p->next; if(Q->rear==p) Q->rear=Q->front; x->num=p->data.num; x->t.hour=p->data.t.hour; x->t.min=p->data.t.min; free(p); //释放临时指针 return 1; } void In(Stack *S,LinkQueue *Q,Car*r) {if(IsFull(S)) {printf("车库已满，请等待！"); EnterQueue(Q,r); //车进入便道} else {Push(S,r); printf("\n您现在所在位置 %d",r->position); //打印车的位置 } } void TaM(Car *r,int h,int m) {if(m>r->t.min) {r->t.min+=60; r->t.hour-=1; } h=r->t.hour-h; m=r->t.min-m; printf("\n停车 %d小时 %d 分钟\n",h,m); printf("每小时收费30元\n"); h=h*60;m=h+m; r->money=0.5*m; printf("请支付金额%.2f元\n",r->money); //输出车主应付金额 } void Out(Stack *S,Stack *S0,Car *r,LinkQueue *Q) {int tag=S->top; Car x; if(IsEmpty(S)) printf("没有此车！"); else {for(;r->num!=S->elem[tag].num && tag>0;tag--) {Push(S0,&S->elem[tag]); S->top--; } if(r->num==S->elem[tag].num) {TaM(r,S->elem[tag].t.hour,S->elem[tag].t.min); S->top--; for(;S0->top>0;S0->top--) Push(S,&S0->elem[S0->top]); if(S->top<SIZE && Q->front!=Q->rear) //判断车库是否有此车，有就找到此车，然后退出 {DeleteQueue(Q,&x); Push(S,&x); } } else if(tag==0) //过道中的车无需收车费 {printf("未进入停车场应支付金额 0元！"); for(;S0->top>0;S0->top--) Push(S,&S0->elem[S0->top]); } } } void print1(Stack *S) {int tag; Car x; printf("停车场停车情况:\n"); if(IsEmpty(S)) printf("无车！"); for(tag=S->top;S->top>0;S->top--) if(GetTop(S,&x))//显示车库中个车的信息及到达时间 printf("车牌号 %d,所在位置 %d,到达/离开时间 %d:%d\n",x.num,x.position,x.t.hour,x.t.min); S->top=tag; } void print2(LinkQueue *Q) {CQueueNode *p; p=Q->front->next; for(;p!=NULL;p=p->next) //显示过道上车的信息及到达时间 printf("等待车牌号 %d, 到达/离开时间 %d:%d",p->data.num,p->data.t.hour,p->data.t.min); } void print() {printf("\n***********************************欢迎光临*************************************\n"); printf("\n 请选择:\n"); printf("\n 1 :到达"); printf("\n 2 :离开"); printf("\n 3 :搜索"); printf("\n 4 :退出\n"); printf("\n"); } int main(void) {int n,m,i=1,j,flag=0; Car c[10]; Stack S,S0; //设定堆栈S，SO LinkQueue Q; //便道 InitStack(&S); //堆栈S InitStack(&S0); //临时堆栈S0 InitQueue(&Q); while(1) {print(); scanf("%d",&m); switch(m) {case 1: printf("\n请输入车牌号:"); scanf("%d",&c[i].num); printf("\n请输入到达/离开时间:"); scanf("%d:%d",&c[i].t.hour,&c[i].t.min); In(&S,&Q,&c[i]);i++; //车辆的情况 break; case 2: printf("\n请输入车牌号:"); scanf("%d",&n); for(j=0;j<10;j++) if(n==c[j].num) break; printf("\n请输入到达/离开时间:"); scanf("%d:%d",&c[j].t.hour,&c[j].t.min); Out(&S,&S0,&c[j],&Q); //车辆的情况 break; case 3: print1(&S); //输出车库中车的信息 print2(&Q); //输出过道上车的信息 break;//终止 case 4: flag=1; break; default: printf("\n输入错误，请输入 1,2,3 或4"); } if(flag) break; //结束程序 } return 0; }

5、C语言学生考勤系统

#include<stdio.h>#include<stdlib.h>#include<string.h>const int N = 1010;const int LEN = 20;const int CLAstunumber = 10;//每个班CLAstunumber人 typedef struct{char attdate[LEN];//日期int atts;//出勤情况 0缺勤 1出勤 }attdent;typedef struct{char stname[LEN];char sex[LEN];int stnumber;int core;attdent stattdent[N];//最多纪录N个日期的考勤情况 }studentinf;int cnt;//记录日期数组用到哪里 studentinf students[CLAstunumber];void menu(){printf("========================================================\n");printf("0.学生信息录入\n");printf("1.开始考勤\n");printf("2.修改学生考勤纪录\n");printf("3.生成并查看学生考勤分数\n");printf("4.读取数据\n");printf("5.保存数据\n");printf("6.退出\n");printf("========================================================\n");}void studentinput(){//录入操作 for(int i = 0 ; i < CLAstunumber; i ++){printf("----------------------------------------\n");printf("请输入学生姓名： |\n");studentinf student1;scanf("%s",student1.stname);printf("请输入学生性别： |\n");scanf("%s",student1.sex);printf("请输入学生学号： |\n");scanf("%d",&student1.stnumber);student1.core = 0;//(student1.stattdent[N]).attdate[LEN] = '0';students[i] = student1;printf("----------------------------------------\n");}}void attcheck(){//考勤操作 for(int i = 0;i < CLAstunumber ; i ++){students[i];printf("------------------------------\n");printf("姓名：%s\n",students[i].stname);printf("性别：%s\n",students[i].sex);printf("学号：%d\n",students[i].stnumber);printf("请输入时间：XXXX/XX/XX\n");scanf("%s",(students[i].stattdent[cnt]).attdate);printf("请输入该学生出勤情况：(0表示缺勤，1表示出勤)\n");scanf("%d",&(students[i].stattdent[cnt]).atts);cnt ++;printf("------------------------------\n");}}void changeinf(){//遍历修改char fname[LEN];char fdate[LEN];printf("----------------------------------\n");printf("请输入学生姓名：\n");scanf("%s",fname);int stand1;//退出第一层for标准 for(int i = 0;i < CLAstunumber; i ++) {if(!strcmp(fname,students[i].stname)){printf("学生姓名：%s\n",students[i].stname);printf("请输入时间：(XXXX/XX/XX)\n");scanf("%s",fdate);for(int j = 0;j < cnt ; j ++){if(!strcmp(fdate,(students[i].stattdent[j]).attdate))printf("学生：%s",fname);printf("考勤时间：%s\n",fdate);printf("出勤情况：%d\n",(students[i].stattdent[j]).atts);printf("请输入修改后的出勤情况：\n");scanf("%d",&(students[i].stattdent[j]).atts);printf("修改成功！\n");stand1 = 1;break;}if(stand1 == 1) break;}}printf("----------------------------------\n");}void checkcore(){//生成考勤分数 = 出勤次数即分数 for(int i = 0;i < CLAstunumber; i++){printf("----------------------------\n");printf("学生姓名：%s\n",students[i].stname);printf("学生性别：%s\n",students[i].sex);printf("学生学号：%d\n",students[i].stnumber);//计算分数students[i].core = 0;for(int j = 0;j < cnt ; j ++){students[i].core += (students[i].stattdent[j]).atts; } printf("考勤分数：%d\n",students[i].core); printf("----------------------------\n");}}void readdata(){FILE *fp = NULL;fp = fopen("data.txt","rb");//读出 int i = 0;while(!feof(fp)){fread(&students[i],sizeof(studentinf),1,fp);i ++;}i --;cnt = i;fclose(fp);printf("读取成功！\n");}void savedata(){FILE *fp = NULL;fp = fopen("data.txt","wb");//写入for(int i = 0;i < CLAstunumber ; i ++){fwrite(&students[i],sizeof(studentinf),1,fp);}fclose(fp); printf("保存成功！\n"); }int main(){menu();int op;while(1){scanf("%d",&op);if(op == 0){system("cls");studentinput();menu();}else if(op == 1){system("cls");attcheck();menu();} else if(op == 2){changeinf();menu();}else if(op == 3){system("cls");checkcore();menu();}else if(op == 4){system("cls");readdata();menu();}else if(op == 5){system("cls");savedata();menu();}else if(op == 6){break;}else printf("input error!\n");}}

6、C语言班级学生管理系统

#include<stdio.h>#include<conio.h>#include<string.h>#include<stdlib.h>int count1=0;int count2=0;int count3=0;void class_print();void men1_student();void men2_student(); void men3_student();void men4_student(); void input_student();void input_grade(); void input_reward();void input_finance();void report_finance(); void seek_student();void seek_grade();void seek_reward();void change_student();void change_grade();void change_reward();int now1_student();int now2_student();int now3_student();struct date{int year;int month;int day;};struct student{char number[2];char name[10];char sex[4];char tel[15];char id[20];char study[10];};struct grade{char number[2];char name[10];char math[4];char English[4];char Cprogram[4];char sumtest[4];};struct reward{char number[2];char name[10];struct date time;char rewarding[80];};struct finance{char thing[20];char type[8];struct date time2;int i;};struct student m_stu[50];struct grade g_stu[50];struct reward r_stu[50];struct finance f_class;struct grade t_change;main(){int choice=-1; //一级菜单 while(choice!=0){printf("\n");printf("\t\t\t\t\t\t**"); class_print(); printf("**\n"); printf("\t\t\t\t\t\t****************************\n");printf("\t\t\t\t\t\t** 班级学生学籍管理系统 **\n");printf("\t\t\t\t\t\t**1.户籍管理系统**\n");printf("\t\t\t\t\t\t**2.成绩管理系统**\n");printf("\t\t\t\t\t\t**3.奖惩管理系统**\n");printf("\t\t\t\t\t\t**4.财务管理系统**\n");printf("\t\t\t\t\t\t**0.退 出**\n");printf("\t\t\t\t\t\t请选择");scanf("%d",&choice);switch(choice){case 1:men1_student();break;case 2:men2_student(); break;case 3: men3_student();break;case 4: men4_student();break;case 0:printf("返回上一级");break; default :break;}}} void men1_student() //二级菜单（学生户籍管理）{int choice=-1;while(choice!=0){printf("\n");printf("\t\t\t\t\t\t****************************\n");printf("\t\t\t\t\t\t**"); class_print(); printf("**\n");printf("\t\t\t\t\t\t** 班级学生户籍信息管理 **\n");printf("\t\t\t\t\t\t** 户籍信息已录入人数:");now1_student();printf(" **\n");printf("\t\t\t\t\t\t**1.户籍录入系统**\n");printf("\t\t\t\t\t\t**2.户籍修改系统**\n");printf("\t\t\t\t\t\t**3.户籍查询系统**\n");printf("\t\t\t\t\t\t**0.返 回**\n");printf("\t\t\t\t\t\t请选择"); scanf("%d",&choice); switch(choice){case 1:input_student();break;case 2:change_student();break;case 3:seek_student();break;case 0:printf("返回上一级");break;default :break;}getch();}}void input_student() // 户籍录入函数 录入信息保存至D盘根目录下information1.txt文件下{int j;printf("学生户籍信息录入");printf("\n班内序号: ");scanf("%s",&m_stu[count1].number);printf("\n姓名: ");gets(m_stu[count1].name);gets(m_stu[count1].name);printf("\n性别: ");scanf("%s",&m_stu[count1].sex);printf("\n电话号码: ");scanf("%s",&m_stu[count1].tel);printf("\n身份证号: ");scanf("%s",&m_stu[count1].id);printf("\n学号: ");scanf("%s",&m_stu[count1].study);printf("是否保存该学生信息？1-保存 2-放弃");scanf("%d",&j);if(j==1){FILE *info; //保存至本地文件 info=fopen("d:\\information1.txt","at+");fwrite(&m_stu[count1],sizeof(struct student),1,info);fclose(info);printf("信息已保存至D:\\information1.tex 文件下，按任意键继续");count1++;}else printf("放弃保存，按任意键继续"); }void seek_student() //查询户籍信息函数 {FILE *info; info=fopen("d:\\information1.txt","rt");int i;printf("请输入该学生班内序号");scanf("%d",&i);if(i<1||i>50) printf("抱歉，该学生信息不存在");else {rewind(info);fseek(info,sizeof(struct student)*(i-1),0);fread(&m_stu[i-1],sizeof(struct student),1,info);printf("\n\n序号 姓名 性别 电话号码\t 身份证号\t\t学号\t");printf("\n\n%d %s %s %s %s %s",i,m_stu[i-1].name,m_stu[i-1].sex,m_stu[i-1].tel,m_stu[i-1].id,m_stu[i-1].study);}}void change_student() //修改户籍信息{int i=0,j,k,f;char h[100000];FILE *info; info=fopen("d:\\information1.txt","rt");printf("\n\t请输入要修改户籍信息的学生班内序号");scanf("%d",&j);if(j<1||j>50) printf("抱歉，该学生信息不存在");else {rewind(info);while(fgets(h,sizeof(struct student),info)!=NULL){fseek(info,sizeof(struct student)*i,0);fread(&m_stu[i],sizeof(struct student),1,info);i++;}}fclose(info);printf("\n该学生目前户籍信息为\n：");printf("\n\n序号 姓名 性别 电话号码\t 身份证号\t\t学号\t");printf("\n\n%d %s %s %s %s %s",j,m_stu[j-1].name,m_stu[j-1].sex,m_stu[j-1].tel,m_stu[j-1].id,m_stu[j-1].study);printf("确定修改此学生信息？1- 修改 2- 返回");scanf("%d",&k);if(k==1){printf("\n姓名: ");gets(m_stu[j-1].name);gets(m_stu[j-1].name);printf("\n性别: ");scanf("%s",&m_stu[j-1].sex);printf("\n电话号码: ");scanf("%s",&m_stu[j-1].tel);printf("\n身份证号: ");scanf("%s",&m_stu[j-1].id);printf("\n学号: ");scanf("%s",&m_stu[j-1].study);} else return; info=fopen("d:\\information1.txt","wt");for(f=0;f<i;f++){fseek(info,sizeof(struct student)*f,0);fwrite(&m_stu[f],sizeof(struct student),1,info);}fclose(info);printf("修改成功！");}void men2_student()//二级菜单（学生成绩管理）{int choice=-1; while(choice!=0){printf("\n\t\t\t\t\t\t****************************\n");printf("\t\t\t\t\t\t**"); class_print(); printf("**\n");printf("\t\t\t\t\t\t** 班级学生成绩信息管理 **\n");printf("\t\t\t\t\t\t** 成绩信息已录入人数:");now2_student();printf(" **\n");printf("\t\t\t\t\t\t**1.成绩录入系统**\n");printf("\t\t\t\t\t\t**2.成绩修改系统**\n");printf("\t\t\t\t\t\t**3.成绩查询系统**\n");printf("\t\t\t\t\t\t**4.综测排名系统**\n");printf("\t\t\t\t\t\t**0.返 回**\n");printf("\t\t\t\t\t\t请选择"); scanf("%d",&choice); switch(choice){case 1:input_grade(); break;case 2:change_grade();break;case 3:seek_grade();break;case 4:printf("功能正在研发中，敬请期待..."); break;default:break;}getch();} }void input_grade() // 成绩录入函数 ，录入信息保存至 D盘根目录下information2.txt文件下{int j;printf("学生成绩信息录入");printf("\n班内序号");scanf("%s",&g_stu[count2].number);printf("\n姓名: ");gets(g_stu[count2].name);gets(g_stu[count2].name);printf("\n高数: ");scanf("%s",&g_stu[count2].math);printf("\n英语:");scanf("%s",&g_stu[count2].English);printf("\nC语言:");scanf("%s",&g_stu[count2].Cprogram);printf("\n综测:");scanf("%s",&g_stu[count2].sumtest);printf("是否保存该学生信息？1-保存 2-放弃");scanf("%d",&j);if(j==1){FILE *info2; //保存至本地文件 info2=fopen("d:\\information2.txt","at+");fwrite(&g_stu[count2],sizeof(struct grade),1,info2);fclose(info2);printf("信息已保存至D:\\information.tex2 文件下，按任意键继续");count2++;}else printf("放弃保存，按任意键继续"); }void seek_grade() //查询成绩信息函数 {FILE *info2; info2=fopen("d:\\information2.txt","rt");int i;printf("\n\t请输入该学生班内序号");scanf("%d",&i);if(i<1||i>50) printf("\n抱歉，该学生信息不存在");else {rewind(info2);fseek(info2,sizeof(struct grade)*(i-1),0);fread(&g_stu[i-1],sizeof(struct grade),1,info2);printf("\n\n序号 姓名 高数 英语 C语言 综测");printf("\n\n%d %s %s %s %s %s",i,g_stu[i-1].name,g_stu[i-1].math,g_stu[i-1].English,g_stu[i-1].Cprogram,g_stu[i-1].sumtest);}}void change_grade() //修改成绩信息 {int i=0,j,k,f;char h[100000];FILE *info; info=fopen("d:\\information2.txt","rt");printf("\n\t请输入要修改成绩信息的学生班内序号");scanf("%d",&j);if(j<1||j>50) printf("\n抱歉，该学生信息不存在");else {rewind(info);while(fgets(h,sizeof(struct grade),info)!=NULL){fseek(info,sizeof(struct grade)*i,0);fread(&g_stu[i],sizeof(struct grade),1,info);i++;}}fclose(info);printf("\n该学生目前成绩信息为\n：");printf("\n\n序号 姓名 高数 英语 C语言 综测");printf("\n\n%d %s %s %s %s %s",j,g_stu[j-1].name,g_stu[j-1].math,g_stu[j-1].English,g_stu[j-1].Cprogram,g_stu[j-1].sumtest);printf("\n\t确定修改此学生信息？1- 修改 2- 返回");scanf("%d",&k);if(k==1){printf("\n姓名: ");gets(g_stu[j-1].name);gets(g_stu[j-1].name);printf("\n高数: ");scanf("%s",&g_stu[j-1].math);printf("\n英语: ");scanf("%s",&g_stu[j-1].English);printf("\nC语言: ");scanf("%s",&g_stu[j-1].Cprogram);printf("\n综测: ");scanf("%s",&g_stu[j-1].sumtest);} else return; info=fopen("d:\\information2.txt","wt");if(info==NULL){printf("不能打开此文件，按任意键继续");getch();}for(f=0;f<i;f++){fseek(info,sizeof(struct grade)*f,0);fwrite(&g_stu[f],sizeof(struct grade),1,info);}fclose(info);printf("修改成功！");}void men3_student() //二级菜单（学生奖惩管理）{int choice=-1;while(choice!=0){printf("\n");printf("\t\t\t\t\t\t****************************\n");printf("\t\t\t\t\t\t**"); class_print(); printf("**\n");printf("\t\t\t\t\t\t** 班级学生奖惩信息管理 **\n");printf("\t\t\t\t\t\t** 奖惩信息已录入人数:");now3_student();printf(" **\n");printf("\t\t\t\t\t\t**1.奖惩录入系统**\n");printf("\t\t\t\t\t\t**2.奖惩修改系统**\n");printf("\t\t\t\t\t\t**3.奖惩查询系统**\n");printf("\t\t\t\t\t\t**0.返 回**\n");printf("\t\t\t\t请选择"); scanf("%d",&choice); switch(choice){case 1:input_reward();break;case 2:change_reward();break;case 3:seek_reward();break;case 0:printf("返回上一级");break;default :break;}getch();}}void input_reward() // 奖惩录入函数录入信息保存至D盘根目录下information3.txt文件下{int j;printf("学生奖惩信息录入");printf("\n班内序号: ");scanf("%s",&r_stu[count3].number);printf("\n姓名: ");gets(r_stu[count3].name);gets(r_stu[count3].name);printf("\n奖惩时间: ");scanf("%d.%d.%d",&r_stu[count3].time.year,&r_stu[count3].time.month,&r_stu[count3].time.day);printf("\n具体事件: ");gets(r_stu[count3].rewarding);gets(r_stu[count3].rewarding);printf("\n是否保存该学生信息？1-保存 2-放弃");scanf("%d",&j);if(j==1){FILE *info; //保存至本地文件 info=fopen("d:\\information3.txt","at+");fwrite(&r_stu[count3],sizeof(struct reward),1,info);fclose(info);printf("\n信息已保存至D:\\information3.tex 文件下，按任意键继续");count3++;}else printf("放弃保存，按任意键继续"); }void seek_reward()//查询奖惩信息函数根据学生班级序号 {FILE *info; info=fopen("d:\\information3.txt","rt");int i;printf("\n\t请输入该学生班内序号");scanf("%d",&i);if(i<1||i>50) printf("\n抱歉，该学生信息不存在");else {rewind(info);fseek(info,sizeof(struct reward)*(i-1),0);fread(&r_stu[i-1],sizeof(struct reward),1,info);printf("\n\n序号 姓名 奖惩时间 具体事件\t\t");printf("\n\n%d %s %d.%d.%d %s ",i,r_stu[i-1].name,r_stu[i-1].time.year,r_stu[i-1].time.month,r_stu[i-1].time.day, r_stu[i-1].rewarding);}}void change_reward()//修改奖惩信息{int i=0,j,k,f;char h[100000];FILE *info; info=fopen("d:\\information3.txt","rt");printf("\n\t请输入要修改奖惩信息的学生班内序号");scanf("%d",&j);if(j<1||j>50) printf("\n抱歉，该学生信息不存在");else {rewind(info);while(fgets(h,sizeof(struct reward),info)!=NULL){fseek(info,sizeof(struct reward)*i,0);fread(&r_stu[i],sizeof(struct reward),1,info);i++;}}fclose(info);printf("\n该学生目前奖惩信息为\n：");printf("\n\n序号 姓名 奖惩时间 具体事件");printf("\n\n%d %s %d.%d.%d %s ",j,r_stu[j-1].name,r_stu[j-1].time.year,r_stu[j-1].time.month,r_stu[j-1].time.day ,r_stu[j-1].rewarding);printf("\n\t确定修改此学生信息？1- 修改 2- 返回");scanf("%d",&k);if(k==1){printf("\n姓名: ");gets(r_stu[j-1].name);gets(r_stu[j-1].name);printf("\n奖惩时间: ");scanf("%d.%d.%d",&r_stu[j-1].time.year,&r_stu[j-1].time.month,&r_stu[j-1].time.day);printf("\n具体事件: ");scanf("%s",&r_stu[j-1].rewarding);} else return; info=fopen("d:\\information3.txt","wt");for(f=0;f<i;f++){fseek(info,sizeof(struct reward)*f,0);fwrite(&r_stu[f],sizeof(struct reward),1,info);}fclose(info);printf("修改成功！");}int now1_student() //录入户籍信息学生数目 在菜单中 显示 已经录入学生人数{int i=1;char j[100000];FILE *info;info=fopen("D:\\information1.txt","rt");rewind(info);while(fgets(j,sizeof(struct student),info)!=NULL){fseek(info,sizeof(struct student)*i,0);i++;}fclose(info);printf("%d",i-1); }int now2_student() //录入成绩信息学生数目在菜单中 显示 已经录入学生人数{int i=1;char j[100000];FILE *info;info=fopen("D:\\information2.txt","rt");rewind(info);while(fgets(j,sizeof(struct grade),info)!=NULL){fseek(info,sizeof(struct grade)*i,0);i++;}fclose(info);printf("%d",i-1); }int now3_student() //录入奖惩信息学生数目在菜单中 显示 已经录入学生人数{int i=1;char j[100000];FILE *info;info=fopen("D:\\information3.txt","rt");rewind(info);while(fgets(j,sizeof(struct reward),info)!=NULL){fseek(info,sizeof(struct reward)*i,0);i++;}fclose(info);printf("%d",i-1); }void class_print()// 录入专业班级信息，并保存至D盘根目录下information0.txt文件下{char major[20],class_number[4];FILE *info;info=fopen("d:\\information0.txt","rt");if(info==NULL){info=fopen("d:\\information0.txt","wt");printf("\n请输入专业 :");scanf("%s",&major);printf("\n请输入班级 :");scanf("%s",&class_number);fwrite(major,sizeof(major),1,info);fwrite(class_number,sizeof(class_number),1,info);printf("\n\t已保存专业班级信息！");fclose(info);info=fopen("d:\\information0.txt","rt");fread(&major,sizeof(major),1,info);fread(&class_number,sizeof(class_number),1,info);printf("%s",major);printf("%s班",class_number); }else {fread(&major,sizeof(major),1,info);fread(&class_number,sizeof(class_number),1,info);printf("%s",major);printf("%s班",class_number);fclose(info);}}void men4_student() //二级菜单（班级财务管理）{int choice=-1;while(choice!=0){printf("\n");printf("\t\t\t\t\t\t****************************\n");printf("\t\t\t\t\t********财务信息不可修改,请谨慎录入！******\n");printf("\t\t\t\t\t\t** 班级学生财务信息管理 **\n");printf("\t\t\t\t\t\t**1.财务录入系统 **\n");printf("\t\t\t\t\t\t**2.财务报表系统 **\n");printf("\t\t\t\t\t\t**0.返 回**\n");printf("\t\t\t\t\t\t请选择"); scanf("%d",&choice); switch(choice){case 1:input_finance();break;case 2:report_finance(); break;case 3:case 0:printf("返回上一级");break;default :break;}getch();}}void input_finance() // 财务录入函数 ，录入后信息保存到D盘根目录下 information4.txt文件中{int j;printf("班级财务信息录入");printf("\n收支时间: ");scanf("%d.%d.%d",&f_class.time2.year,&f_class.time2.month,&f_class.time2.day );printf("\n具体事件: ");gets(f_class.thing);gets(f_class.thing);printf("\n财务类型(收入或开支): ");scanf("%s",&f_class.type);printf("\n流动金额(收入为正开支为负): ");scanf("%d",&f_class.i);printf("\n是否保存该财务信息？1-保存 2-放弃");scanf("%d",&j);if(j==1){FILE *info; //保存至本地文件 info=fopen("d:\\information4.txt","at+");fwrite(&f_class,sizeof(struct finance),1,info);fclose(info);printf("\n信息已保存至D:\\information4.txt 文件下，按任意键继续");}else printf("放弃保存，按任意键继续"); }void report_finance()// 财务信息报表{char h[100000];int sum=0,i=0;printf("\n收支时间 具体事件\t财务类型 流动金额\n");FILE *info; info=fopen("d:\\information4.txt","rt");while(fgets(h,sizeof(struct finance),info)!=NULL){fseek(info,sizeof(struct finance)*i,0);fread(&f_class,sizeof(struct finance),1,info);i++;printf("\n%d.%d.%d %s%s %d\n",f_class.time2.year,f_class.time2.month,f_class.time2.day, f_class.thing,f_class.type,f_class.i);sum=sum+f_class.i ;}printf("\n\t\t班费余额：%d元",sum); }

7、C语言超市收款系统

#include<stdio.h>#include<stdlib.h>#include<string.h>#define M 10typedef struct //定义商品的结构体 {char name[10];int num;float price; int ID; }Store;Store store[M];void shuru( ) //定义输入商品的函数 {int i;int isgo;int n;for(i=0;i<M;i++){store[i].ID=i+1;//自定义商品的ID printf("输入商品的名字\n");scanf("%s",&store[i].name); printf("输入商品的价格\n");scanf("%f",&store[i].price); printf("还需要输入商品吗？\n");printf("1.YES,2.NO\n");scanf("%d",&isgo);if(isgo!=2)//判断是否继续输入商品 {}else//不输入商品直接跳出，展示所有商品的信息 {for(n=0;n<=i;n++){printf("商品ID\t商品名字\t商品价格\n");printf("%d\t,%s\t,%f\n",store[n].ID,store[n].name,store[n].price);}i=10;}}}void shopp() //购物函数 {int isgo=1;int i;int n;int number;int shoppid; float pricenum;float pricesum=0.0;float priceguke;printf("库存的商品如下\n");for(n=0;n<M;n++){printf("商品ID\t商品名字\t商品价格\n");printf("%d\t,%s\t,%f\n",store[n].ID,store[n].name,store[n].price);if(store[n].price==0)//这里是为了不把没定义的商品不显示出来 {n=M;}}while(isgo)//购物 {printf("按下你需要的商品ID和数量\n");scanf("%d,%d",&shoppid,&number);pricenum=(store[shoppid-1].price)*number;pricesum=pricesum+pricenum;printf("你购买的商品%s是%d个,价格是%f,总金额是%f\n",store[shoppid-1].name,number,pricenum,pricesum);printf("是否继续购物\n");printf("0.退出，1.继续\n");scanf("%d",&isgo); }printf("输入顾客支付的金钱\n");//结算 scanf("%f",&priceguke);if(priceguke>=pricesum){printf("收到顾客%f元，找回顾客%f元\n",priceguke,priceguke-pricesum);}else{printf("收到的钱小于总金额\n");}printf("谢谢光临\n");}main(){int xitong=1;while(xitong!=3){printf("-------------------欢迎登录好浪费超市系统-----------------------\n");printf("1.输入商品信息\n");printf("2.购买商品\n");printf("3.退出系购买商品统\n");scanf("%d",&xitong);switch(xitong){case 1:shuru();break;case 2:shopp();break;case 3:printf("欢迎再次使用好浪费超市系统\n"); }}}

8、C语言超市信息管理系统

/*ifndef/define/endif”主要目的是防止头文件的重复包含和编译*/#ifndef MARKET_H#define MARKET_H#include<stdio.h>#include<string.h>#include<stdlib.h>#include<time.h>#include<conio.h>#include<windows.h>#define N 5struct mar//该结构体为存储货物信息 {char ID[10];//货号 char brand[20];//品名double inprice;//进价double outprice;//售价int storage;//存储量 };struct node//该结构体为存储购物车中的信息 {struct mar buy;//货物信息 int number;//购物的数量 struct node *next; //指向下一个购物节点 };struct mar goods[N];//结构体数组 struct node *cart;//购物车头结点 int menu();//打印主菜单函数 void WenJianKucun();//文件建立库存信息 void ShouJianKucun();//手动建立库存信息void DisKucun();//显示库存信息函数void ShopCart();//对购物车进行操作int ShopCartMenu();//打印购物车菜单void XianShi();//显示购物列表void add();//在购物车里添加商品 void UpdateKu();//更新购物车信息函数 void calculate();//计算所购商品价格并修改保存 #endifint main(){//主函数 printf("*********************************************************\n");printf("欢迎进入超市信息管理系统\n");printf("*********************************************************\n");int find=0;while(1){switch(menu()) {//menu()函数为输入选项case 1: WenJianKucun();find=1; break;//选项1 文件建立库存信息case 2: if(find==0)ShouJianKucun();elseprintf("库存信息已存在\n");break;//选项2 手动建立库存信息case 3: DisKucun(); break;//选项3 显示库存信息函数case 4: ShopCart(); break;//选项4 对购物车进行操作case 5: calculate(); break;//选项5 计算所购商品价格并修改保存 case 6: system("cls");printf("感谢您的使用，再见！\n");Sleep(2000);exit(0);}}return 0;}int menu(){//打印主菜单函数char s[5];//输入的选项 int n;//选项为整数 printf("\n\n请选择下面的数字进行操作：\n");printf("--------------------------------------------\n"); printf("1. 文件建立库存信息\n");printf("2. 手动建立库存信息\n");printf("3. 显示所有商品信息\n");printf("4. 购物车\n");printf("5. 结算\n");printf("6. 退出程序\n"); printf("--------------------------------------------\n");printf("请选择对应数字1~6（1,2选其一）\n");printf("本程序制作人: 物联网工程 胡斌、刘萌欣、陈俊飞\n");while(1){fflush(stdin);//清空输入流gets(s);//输入一串字符串 n=atoi(s);//字符串转化为整数 if(n<1||n>6)//判断输入的选项是否正确printf("输入错误，请重新输入：\n");else//输入正确，结束循环 break; }return n;//返回输入选项 } void WenJianKucun(){//文件建立库存信息FILE *fp;//定义文件指针 if((fp=fopen("kucun.txt","w"))==NULL) {//创建文件printf("创建文件失败\n");return ;}//向文件中写入信息 fprintf(fp,"69011111 飘柔日常护理 12.00 15.00 30\n");fprintf(fp,"69021111 优酸乳 1.50 2.00 200\n");fprintf(fp,"69031111 红富士苹果 2.50 3.50 300\n");fprintf(fp,"69041111 晨光笔芯 0.70 1.00 150\n");fprintf(fp,"69051111 胡医生面膜 12.00 16.50 100\n");fclose(fp);//关闭文件 printf("成功导入信息\n"); return ;}void ShouJianKucun(){//手动建立库存信息FILE *fp;//定义文件指针 int i;printf("请依次输入货物信息：\n");printf("--------------------------------------------\n");for(i=0;i<N;i++) {//向文件中写入信息printf("第%d个商品：\n",i+1);printf("货号："); fflush(stdin);//清空输入流gets(goods[i].ID);//输入货号printf("品名：");fflush(stdin);//清空输入流gets(goods[i].brand);//输入品名 printf("进价: ");fflush(stdin);//清空输入流scanf("%lf",&goods[i].inprice);//输入进价 printf("售价：");fflush(stdin);//清空输入流scanf("%lf",&goods[i].outprice);//输入售价 printf("数量：");fflush(stdin);//清空输入流scanf("%d",&goods[i].storage);//输入数量 printf("\n");}if((fp=fopen("kucun.txt","w"))==NULL) {//判断文件是否创建失败printf("创建文件失败。\n");return ;}//fprintf(fp,"货号 品名单价 库存量\n");for(i=0;i<N;i++){//把货物信息写进文件fprintf(fp,"%-11s%-15s%-8.3f%-8.3f%-7d\n",goods[i].ID,goods[i].brand,goods[i].inprice,goods[i].outprice,goods[i].storage);}//fwrite(goods,sizeof(struct mar),N,cun);二进制文件输出 fclose(fp);//关闭文件 printf("信息导入成功\n");return ;}void DisKucun(){//显示库存信息函数FILE *fp;//定义文件指针 int i;if((fp=fopen("kucun.txt","r"))==NULL) {//判断是否打开了文件printf("打开文件失败\n");return ;}for(i=0;i<N;i++) {//输出物品信息//读取文件信息 fscanf(fp,"%s%s%lf%lf%d",goods[i].ID,goods[i].brand,&goods[i].inprice,&goods[i].outprice,&goods[i].storage);printf("--------------------------------------------\n");//输出文件信息 printf("货号 品名 单价 库存量\n");printf("%-11s%-15s%-8.3f%-7d\n",goods[i].ID,goods[i].brand,goods[i].outprice,goods[i].storage);}fclose(fp);//关闭文件 }void ShopCart(){//对购物车进行操作while(1){switch(ShopCartMenu()) {//ShopCartMenu()为输入选项case 1: XianShi();break;//选项1 显示购物车物品信息case 2: add();break;//选项2 添加购物车物品//case 3: deleteitem();//删除购物车中的某项商品// break;case 3: return ;//选项3 退出 }}}int ShopCartMenu(){//打印购物车菜单int n;//为整数 char s[5];//输入一串字符串 printf("\n\n请选择操作：\n");printf("--------------------------------------------\n");printf("1. 显示当前可以购物列表\n");printf("2. 在购物车里添加商品\n");//printf("3. 删除购物车商品\n"); printf("3. 退出\n");printf("--------------------------------------------\n");printf("请选择对应数字1~3\n");while(1){fflush(stdin);//清空输入流gets(s);//输入一串字符串 n=atoi(s);//字符串转化为整数 if(n<1||n>3)//判断输入的选项是否正确 printf("输入错误，请重新输入: \n");else//输入正确，结束循环 break;}return n;//返回输入选项 }void XianShi(){//显示购物列表struct node *p; //定义节点指针 p=cart;//把购物车链表赋给p FILE *fp1;//定义文件指针 if((fp1=fopen("cart.txt","r"))==NULL){//判断是否打开了文件 printf("打开文件失败\n");//return ;}if(p==NULL){//购物车为空 printf("目前购物车为空：");return ;}else{//购物车不为空 while(p!=NULL) {//把购物车物品不断减一，直到为空printf("--------------------------------------------\n");printf("货号 品名 单价 数量\n");printf("%-11s%-15s%-8.3f%-7d\n",p->buy.ID,p->buy.brand,p->buy.outprice,p->number); //输出物品信息 p=p->next; }}fclose(fp1);//关闭文件 return ;}void add(){//在购物车里添加商品 FILE *fp,*fp1;//fp表示kucun文件，fp1表示cart文件 struct node *p1,*p,*p2;//定义节点指针 int i,n;//n表示商品数量 char s[20];//表示货号或者品名 char choice1[20],choice2[20];//选择项（y继续，n继续） do{printf("输入所需物品的名称或货号：\n");fflush(stdin);//清空输入流 gets(s);//输入货号或者品名if((fp=fopen("kucun.txt","r"))==NULL){//打开文件 printf("打开文件失败\n");continue;}for(i=0;i<N;i++){//循环N次 fscanf(fp,"%s%s%*lf%lf%d",goods[i].ID,goods[i].brand,&goods[i].outprice,&goods[i].storage);//从文件中读取货物信息 if((strcmp(goods[i].ID,s)==0||strcmp(goods[i].brand,s)==0)&&goods[i].storage>0)//找输入对应的商品 {printf("已找到所需商品：\n");printf("--------------------------------------------\n");printf("货号 品名 单价 数量\n");printf("%-11s%-15s%-8.3f%-7d\n",goods[i].ID,goods[i].brand,goods[i].outprice,goods[i].storage);//输出所需物品信息 printf("请输入所需商品数量: ");scanf("%d",&n);//商品数量 if(n>goods[i].storage){//判断是否还可以购买不 printf("该商品库存不足\n");break;}printf("\n是否购买此商品？(Y/N)\n");fflush(stdin);//清空输入流 scanf("%s",choice1);//输入一个选项 if(strcmp(choice1,"Y")==0||strcmp(choice1,"y")==0){//输入y/Y表示购买此商品 p=new node;//生成新节点 if(p==NULL){//分配内存失败 printf("内存申请失败！\n");exit(1);//退出 } p->number=n;//商品数量 p->buy=goods[i];//货物信息 p->next=NULL;p1=cart;//把头结点赋给p1if(cart==NULL)//头结点为空 cart=p;//把节点赋值给头结点 else{while(p1->next!=NULL)p1=p1->next;//把链表循环到尾部 p->next=p1->next; p1->next=p;//把新节点p挂在链表尾部 }}elseprintf("输入错误\n");break;//找到商品结束循环 }} if(i==N)//循环完毕还没找到对应商品 printf("未找到所需物品\n");fclose(fp);//关闭文件 UpdateKu();//更新库存信息函数 printf("是否继续购物?(Y/N)\n");fflush(stdin);//清空输入流 scanf("%s",choice2);//输入选项if(strcmp(choice2,"y")!=0&&strcmp(choice2,"Y")!=0)printf("放弃购买，返回菜单！\n");}while(strcmp(choice2,"y")==0||strcmp(choice2,"Y")==0);//y/Y继续循环 return ;} //更新购物车信息函数 void UpdateKu(){FILE *fp;struct node *p;if((fp=fopen("cart.txt","w"))==NULL) {//判断文件是否创建失败printf("创建文件失败。\n");return ;}p=cart;//把购物车链表赋给p2 while(p!=NULL){// fprintf(fp1,"货号 品名单价 库存量\n");//把货物信息写进文件fprintf(fp,"%-11s%-15s%-8.3f%-7d\n",p->buy.ID,p->buy.brand,p->buy.outprice,p->number);p=p->next;//指向下一个节点 } fclose(fp);//关闭文件 return ; }void calculate(){//计算所购商品价格并修改保存struct node *p;p=cart;//把购物车(cart)链表赋给p double sum=0;//购买商品应付钱数 double pay;//购买商品实付钱数 FILE *fp;//定义文件指针 int i;printf("以下是购物清单：\n");XianShi();//调用函数显示购物列表信息 if((fp=fopen("kucun.txt","r"))==NULL){//打开文件 printf("打开文件失败\n");return ;}for(i=0;i<N;i++){//从文件中读取信息 fscanf(fp,"%s%s%*lf%lf%d",goods[i].ID,goods[i].brand,&goods[i].outprice,&goods[i].storage);}fclose(fp);//关闭文件 while(p!=NULL){//当链表不为空时 sum=sum+p->buy.outprice*p->number;//计算应付钱数 for(i=0;i<N;i++){//找出对应商品库存量 if(strcmp(goods[i].ID,p->buy.ID)==0){//找到对应商品 goods[i].storage=goods[i].storage-p->number;//库存量变化 break;}} p=p->next;//指向下一个节点 }printf("总计：%-8.3f\n",sum);//输出购买物品共需多少钱 printf("输入实付金额：");scanf("%lf",&pay);printf("实付： %-8.3f 找零: %8.3f\n",pay,pay-sum);if((fp=fopen("kucun.txt","w"))==NULL){//打开文件 printf("写入文件失败\n");return ;}for(i=0;i<N;i++){//向文件中写入信息 fprintf(fp,"%-11s%-15s%-8.3f%-8.3f%-7d\n",goods[i].ID,goods[i].brand,goods[i].inprice,goods[i].outprice,goods[i].storage);}fclose(fp);//关闭文件 return ;}

字数太多发在下一篇文章

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13、C语言小学生计算机辅助教学系统

14、C语言门禁系统

15、C语言银行管理系统(文件操作)

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