例如：以下图片形式

#include <stdio.h>
int main()
{int line = 0;scanf_s("%d", &line);int i = 0;//打印上半部分for (i = 0; i < line; i++){//打印空格数int j = 0;for (j = 0; j < line - 1 - i; j++){printf(" ");}//打印*数量for (j = 0; j < 2 * i + 1; j++){printf("*");}printf("\n");}//打印下半部分for (i = 0; i < line - 1; i++){//打印空格数int j = 0;for (j = 0; j <= i; j++){printf(" ");}//打印*数量for (j = 0; j < 2 * (line - 1 - i) - 1;j++){printf("*");}printf("\n");}return 0;
}