CPP

C++ Swap 2 Variables Without Using 3rd Variable

	int num1, num2, temp;
	cout << " Input 1st number : ";
	cin >> num1 ;
	cout << " Input 2nd number : ";
	cin >> num2;	
	num2=num2+num1;
	num1=num2-num1;
	num2=num2-num1;
    cout << " After swapping the 1st number is : "<< num1 <<"
" ; 
    cout << " After swapping the 2nd number is : "<< num2 <<"

" ; 	

swapping without third variable c++

//Author: Subodh
        //! Swap two number using XOR operation
        cout << "Before, n1 = " << num1 << ", n2 = " << num2 << endl;
        num1 = num1 ^ num2, num2 = num1 ^ num2, num1 = num1 ^ num2;
        cout << "After, n1 = " << num1 << ", n2 = " << num2 << endl;