<span style="font-size:24px;">char str5[20] = {};//定义用户名char str6[20] = {};//密码NSLog(@"请输入用户名:");scanf("%s",str5);NSString *Str5 = [[NSString alloc] initWithUTF8String:str5];NSLog(@"请输入密码:");scanf("%s",str6);NSString *Str6 = [[NSString alloc] initWithUTF8String:str6];NSComparisonResult result1 = [Str5 compare:@"Frank"];NSComparisonResult result2 = [Str6 compare:@"lanou"];if (result1 == 0 && result2 == 0) {NSLog(@"登陆成功");}else {NSLog(@"用户名或密码输入错误,请重新输入");}</span></span>
从控制台输入用户名和密码 然后 判断输入的用户名是否是@“Frank” 密码 是否是 @“lanou” 如果用户名和密码都正确 则输出登录成功 否则输出登录失败. 提示:
