Swap of Two Numbers using Reference in C++

A very simple program that I wrote to show you how to swap two numbers using the concept of reference in C++.

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Sample Program Output

Program Listing

swap.cpp

#include <iostream>

using namespace std;

        void swap(int &x, int &y);

       int main()

       {

          

         int x=0,y=0;

         

  cout << "Swap of Two Numbers using Reference in C++";

   cout << "\n\n";

   cout << "Created By Mr. Jake R. Pomperada, MAED-IT";

   cout << "\n\n";

   cout << "Enter values for x and y : ";

   cin >> x >> y;

       cout << "Main. Before swap, x: " << x << " y: " << y << "\n";

         swap(x,y);

         cout << "Main. After swap, x: " << x << " y: " << y << "\n";

        cout << "\n\n";

   cout << " End of Program ";  

           }

          void swap (int &ax, int &ay)

        {

             int temp;

                cout << "Swap. Before swap, ax: " << ax << " ay: " << ay << "\n";

                temp = ax;

                ax = ay;

              ay = temp;

                cout << "Swap. After swap, ax: " << ax << " ay: " << ay << "\n";

                

            }