题解 | #X形图案#

#include <stdio.h>
int main() {
    int n;
    while (scanf("%d", &n) != EOF) { // 注意 while 处理多个 case
    char arr[20][20] = { ' ' };
	int i = 0, j = 0;
	for (int i = 0, j = n - 1; i < n; i++, j--)
	{
		arr[i][i] = '*';
		arr[i][j] = '*';
	}
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < n; j++)
		{
			if (arr[i][j] == '*')
				printf("%c", arr[i][j]);
			else
				printf(" ");
		}
		printf("\n");
	}
    }
    return 0;
}