题解 | #圣诞树#

#include<stdio.h>
int main()
{
	int h;
	int count = 1;
	scanf("%d", &h);
	int cen = h * 3;
	for (int i = 1; i <= cen; i++)
	{
		for (int j = 1; j <= cen - i; j++)
		{
			printf(" ");
		}
		for (int m = i,j = i; j> 0; j-=3)
		{
			if (m == 1 || m % 3 == 1)
				printf("*     ");
			else if (m == 2 || m% 3 == 2)
				printf("* *   ");
			else if (m == 3 || m% 3 == 0)
				printf("* * * ");

		}
		printf("\n");
	}
	for (int i = 1; i <= h; i++)
	{
		for (int i = 1; i <= cen-1; i++)
			printf(" ");
		printf("*\n");
	}
	return 0;
}