题解 | #X形图案#

#include <stdio.h>
#define N 20
int main()
{
    int n = 0;

    while (1 == scanf("%d", &n))
    {
        char arr[N][N] = { 0 };
        int left = 0;
        int right = n - 1;
        while (left <= right)
        {
            for (int i = 0; i < n; i++)
            {
                for (int j = 0; j < n; j++)
                {
                    arr[i][j] = ' ';
                }
                arr[i][left] = '*';
                arr[i][right] = '*';
                left++;
                right--;
            }
        }
        // 输出
        for (int i = 0; i < n; i++)
        {
            for (int j = 0; j < n; j++)
            {
                printf("%c", arr[i][j]);
            }
            printf("\n");
        }
    }

    return 0;
}