题解 | #空心三角形图案#

#include <stdio.h>
int main()
{
	int n = 0;
	while (scanf("%d", &n) != EOF)
	{

		int i,j = 0;
		for (i = 0; i < n; i++)
		{
			for (j = 0; j < n; j++)
			{
				if (j == 0 || i == n - 1 || j == i)
				{
					printf("* ");
				}
				else
				{
					printf("  ");
				}
			}
			printf("\n");
		}

	}
	return 0;
}