ReferenceSwap.cpp

//
// Created by 不死鸟Anka on 2019-07-17.
//

#include "ReferenceSwap.h"
#include <iostream>

using namespace std;

void swap(int &x, int &y);

int main()
{
    int x = 5, y = 10;

    cout << "Main. Before swap, x: " << x << " y: " << y << endl;
    return 0;
}

void swap(int &rx, int &ry)
{
    int temp;

    cout << "Swap. Before swap, rx: " << rx << " ry: " << ry << endl;

    temp = rx;
    rx = ry;
    ry = temp;

    cout << "Swap, After swap, rx: " << rx << " ry: " << ry << endl;
}