题目1073：杨辉三角形

http://ac.jobdu.com/problem.php?pid=1073

#include<iostream>
using namespace std;
int main()
{
    int n;
    int i,j,t;
    while(cin>>n)
    {
        for(i=2;i<=n;++i)
        {
            t=1;
            j=1;
            while(t)
            {
                if(j!=1)
                    cout<<" ";
                cout<<t;
                t=(t*(i-j))/j;
                ++j;
            }
            cout<<endl;
        }
    }
    return 0;
}