cpptemplate.cpp

杨辉三角形的输出方法设计

//=====================================
// title: 杨辉三角形简化
// author: cjj
// date: 2007-10-09
/* Description: 
*/
//=====================================

#include <iostream>
using namespace std;

int Combio(int a, int b);

int main()
{
	for (int a, b; cin >> a >> b;)
	{
		cout << a << "中取出" << b << "个元素的所有组合数为: " << Combio(a, b) << endl;
	}
	return 0;
}

int Combio(int a, int b)
{
	if (b == 0)
		return 1;
	return Combio(a - 1, b - 1) * a / b;
}