杨辉三角.cpp

C++编写的程序源码,里有21天学通C++的课后作业源码和章节源码.

#include <iostream>
#include <iomanip>
int main()
{
	using namespace std;
    int a,b,x,v,i,j,n,m;
    cout << "please input a number";
    cin >> n;
    cout << "1\n";
    for (i=2;i<=n;i++){
        cout << "1  ";
        for (j=2;j<=i;j++){a=1;b=1;
            for (x=i-1;x>=i-j+1;x--){
                a=a*x;
            }
            for (v=j-1;v>=1;v--){
                b=b*v;
            }
            m=a/b;
            cout << m <<"  ";}
        cout <<"\n";}
	return 0;
}