函数的阶乘

#include
int hanshu (int n)

{
int i,s;
s=1;
for (i=1;i<=n; i++)
{
s=s*i;
}
return s;
}
int main()
{
int n;
scanf("%d",&n);
printf("n的阶乘是%ld\n",hanshu( n));
return 0;
}