Program for Swapping 2 nos. using two variables .

#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int a,b;
cout<<“a= “;
cin>>a;
cout<<“b= “;
cin>>b;
a=a+b;
b=a-b;
a=a-b;
cout<<“a=”<<a<<“\n”;
cout<<“b=”<<b;
getch();
}