Thursday, October 16, 2014

SWAP two value using reference variable in C++



Prog 5: Write a program to swap two value using reference variable

#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int A,B,temp;
cout<<"\n Enter the value of A";
cin>>A;
cout<<"\n Enter the value of B";
cin>>B;
int &P=A;
int &Q=B; 
temp=P; 
P=Q;
Q=temp;
cout<<"After swaping"<<endl;
cout<<"A ="<<A<<endl;
cout<<"A ="<<A<<endl;
}

Output:

Enter the value of A
10

Enter the value of B
20

After swapping A & B are: A =20
B =10

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