题解 | #空心三角形图案#

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