#include <stdio.h>
int main()
{
int i, n, sum = 0, f = 1;
printf("输入n:");
scanf("%d", &n);
for(i = 1; i <= n; i++)
{
f = f*i;
sum =sum+f;
}
printf("S=%ld\n",sum);
return 0;
}
输入n，求S=1!+2!+…+n!
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转载自blog.csdn.net/dagedeshu/article/details/80866617
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