main.cpp

this a good book.

#include<iostream.h>

/***found****/
void swap(int a,int b)
{
	/***found****/
	int& t = a;
	a = b;
	/***found****/
	b = *t;
}

void main()
{
	int a,b;
	cout<<"please input two number: "<<endl;
	cin>>a;
	cin>>b;
	swap(a,b);

	cout<<a<<endl;
	cout<<b<<endl;
}