1 2 3
1 2 6
#include<iostream>
using namespace std;
int main()
{
int ls[10001];
int N,i,j;
while(cin>>N)
{
int m=0;ls[0]=1;
for( i=1;i<=N;i++)
{
int temp=0;
for(j=0;j<=m;j++)
{
ls[j]=ls[j]*i+temp;
temp=ls[j]/10000;
ls[j]=ls[j]%10000;
}
if(temp)
{
ls[++m]=temp;
}
}
cout<<ls[m];
for(int k=m-1;k>=0;k--)
printf("%04d",ls[k]);
cout<<endl;
}
return 0;
}原文:http://blog.csdn.net/lsgqjh/article/details/44841165