计算n的阶乘

#include <stdio.h>

//计算n的阶乘
int main()
{
	int i;
	int num = 1;
	int n = 0;
	printf("请输入一个数计算阶乘：");
	scanf_s("%d",&n);
	for (i = 1; i <= n; i++)
	{
		num = num * i;
	}
	printf("%d的阶乘为%d\n",n,num);
	return 0;
}