Program: To illustrate call by reference [swap two numbers]

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Swap the numbers using call by reference
code:

#include<iostream.h>
#include<conio.h>

void swap_ref (int &a, int &b)
{
int t=0;
t=a;
a=b;
b=t;
}

void main()
{
int x,y;
cout<<"Enter Values for x and y :\n";
cin>>x>>y;
swap_ref(x,y);
cout<<"x="<<x<<" y="<<y;
getch();
}

Article by +Jasmeet Singh
Chief-Editor
He is a tech Enthusiast, an Altruist and calm mentor. He loves to code. He is also a creative graphic designer. Do check out his designfolio @ Jasmeet.asia If you like This post, you can follow me on Twitter.

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For Further Reading,

C++ Program, Functions