C++:输入两个整数，将它们按从小到大的顺序输出（使用变量的引用）

#include<iostream>  //预操作
#include<cmath>
using namespace std;//  使用命名空间std
void min(int &c, int &d)
{
	if (c > d)
	{
		cout << d << " " << c << endl;
	}
	else if (c < d);
	{
		cout << c << " " << d << endl;
	}
	if(c==d)
	{
		cout << "The two numbers are equal" << endl;
	}
}
int main()
{
	int a,b;
	cout << "Please printf two numbers:" << endl;
	cin >> a >> b;
	cout << "Two numbers from small to large order is:"<<" ";
	min(a, b);
	system("pause");
	return 0;
}