#include <stdio.h>int main(){for (int x = 1; x<8; x++){for(int y=1;y<=2*x-1;y++){printf("*");}printf("\n");}for (int x = 6; x>0; x--){for(int y=1;y<=2*x-1;y++){printf("*");}printf("\n");}}
用C语言在屏幕上输出以下图案: * *** ***** ******* ********* *********** ************* ***********