“X“型图案

#include 
int main()
{
    int n = 0;
    while (scanf("%d", &n) != EOF)
    {
        for (int i = 0; i < n; i++)  
        {
            for (int j = 0; j < n; j++) 
            {
                if (i == j || i + j == n - 1)
                  
                    printf("*");
                else
                    printf(" ");
            }
            printf("\n"); 
        }
    }
    return 0;
}