C语言-1到n的阶乘

#include<stdio.h>
int main()
{
	int i,j,n;
	int sum=1;
	int sum_number=0;
	printf("请输入n的值：");
	scanf("%d",&n);
	for(i=1;i<=n;i++)
	{
		sum=1;
		for(j=1;j<=i;j++)
		{
			sum=sum*j;
		}
		printf("第%d项的结果为：%d\n",i,sum);
		sum_number=sum_number+sum;
	}
	printf("结果为：%d\n",sum_number);
	return 0;
}