C语言实现打印图形问题

Question

如何用C语言通过for循环实现一下图片的图形，可自由更改边长长度大小

Answer 1

#include <stdio.h>
 
int main()
{
    int n;
    printf("请输入边长：")
    scanf("%d", &n);
    for (int i = 0; i < n; i++)
        printf("*");
    printf("\n");
    for (int i = 0; i < n - 2; i++)
    {
        for (int j = 0; j < n; j++)
        {
            if (j == 0 || j == n - 1 || i + j == n - 2)
                printf("*");
            else
                printf(" ");
        }
        printf("\n");
    }
    for (int i = 0; i < n; i++)
        printf("*");
    return 0;
}