#include <iostream>
using namespace std;

class Operationv1 {
    int a;
    int b;

public:
    Operationv1( int x, int y ) {
        a = x;
        b = y;
    }

    void display() {
        cout << "A = " << a << "\n"
            << "B = " << b << std::endl;
    }

    void swap( ) {
        std::swap( a, b );
        // or
        // int t = a; a = b; b = t;
    }

};


int main() {

    int a, b;
    cout << "Enter value for a and b" << std::endl;
    cin >> a >> b;

    Operationv1 op( a, b );
    op.display( );
    op.swap( );
    op.display( );
    return 0;
}