C++ program to demonstrate call by reference

// call by reference in c++
#include<iostream.h>

#include<conio.h>

void swap(int * ,int *);

void main()

{

          int a,b;

          cout<<"Enter the value for a and b: ";

          cin>>a>>b;

          swap(&a,&b);

          cout<<"Values after swapping A= "<<a<<" B= "<<b;

          getch();

}

void swap(int *p1,int *p2)

{

          int t;

          t=*p1;

          *p1=*p2;

          *p2=t;

}

C++ program to demonstrate call by reference