C++ code to swap two variables without using third variable:

C++ code to swap two variables without using third variable:

#include<iostream>
using namespace std;
int main()
{
int var1, var2;
cout<<"Enter value for first integer: ";
cin>>var1;
cout<<"Enter value for second integer: ";
cin>>var2;
cout<<" Values Before swapping: "<<endl;
cout<<"First Integer ="<<var1<<endl;
cout<<"Second Interger ="<<var2<<endl;
var1=var1+var2;
var2=var1-var2;
var1=var1-var2;
cout<<" Values After swapping: "<<endl;
cout<<"First Integer ="<<var1<<endl;
cout<<"Second Interger ="<<var2<<endl;
return 0;
}