Question

how do i swap using reference variable in c++ ?

Answer 1

#include<iostream>

using namespace std;

void swap(int &a,int &b)

{

int t;

t=a;

a=b;

b=t;

}

int main(void)

{

int x=10;

int y=23;

cout<<"Before swap";

cout<<x<<y;

swap(x,y);

cout<<"After swap";

cout<<x<<y;

return  0;

}

Comments

thank you...... :)

Answer 2

#include<stdio.h>

void main()

{

       int i,j,k;

       printf("enter first value\n");

       scanf("%d",&i);

       printf("enter second  value\n");

       scanf("%d",&j);

       k = i;

       i = j;

       j = k;

       printf("First number is  : %d\n",i);

       printf("Second number is  : %d\n",j);

}

Comments

Here is no use of reference variable.