PROGRAM TO PERFORM CALL BY REFERENCE

Program to perform call by reference:

Code:

#include<iostream.h>

#include<conio.h>

void exchange(int &a,int &b)

{

int c;

c=a;

a=b;

b=c;

}

void main()

{

clrscr();

int a,b;

cin>>a>>b;

cout<<"\t"<<"\nbefore function call\t";

cout<<a<<"\t"<<b;

exchange(a,b);

cout<<"\t"<<"\nafter function call\t";

cout<<a<<"\t"<<b;

getch();

}

Output:

3 5
before function call 3 5
after function call 5 3