Write a Program Swap two numbers without using third variable in C++.

Swap two numbers without using third variable in C++.

#include<iostream>

using namespace std;

int main()

{

int a,b;

cout<<"Enter value of a: ";

cin>>a;

cout<<"Enter value of b: ";

cin>>b;

a=a+b;

b=a-b;

a=a-b;

cout<<"After swap a: "<<a<<"b: "<<b;

return 0;

}

OUTPUT

Enter value of a: 19

Enter value of b: 28

    After swap a: 28 b: 19