اكتب برنامج بلغة ++C يقوم بتبديل رقمين بدون متغير ثالث

/*  C++ Program to Swap Two Numbers without using third variable  */

#include <iostream>
using namespace std;

int main()
{

    int a,b ;

    cout<<"Enter 1st number :: ";
    cin>>a;
    cout<<"\nEnter 2nd number :: ";
    cin>>b;

    cout << "\nBefore swapping, Numbers are :: " << endl;
    cout << "\n\ta = " << a << ", b = " << b << endl;

    a = a + b;
    b = a - b;
    a = a - b;

    cout << "\nAfter swapping, Numbers are :: " << endl;
    cout << "\n\ta = " << a << ", b = " << b << endl;

    return 0;
}