打印菱形

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include<Windows.h>
int main() 
{
    int rows, i, j, space;

    printf("请输入菱形的行数：");
    scanf("%d", &rows);
    for (i = 1; i <= rows; i++)
  {
        for (space = 1; space <= rows - i; space++)
        {
            printf(" ");
        }

        for (j = 1; j <= 2 * i - 1; j++)
        {
            printf("*");
        }

        printf("\n");
        Sleep(200);
    }

    for (i = rows - 1; i >= 1; i--) {
        for (space = 1; space <= rows - i; space++) 
        {
            printf(" ");
        }

        for (j = 1; j <= 2 * i - 1; j++) 
        {
            printf("*");
        }

        printf("\n");
        Sleep(200);
    }

    return 0;
}