#include <iostream>
using namespace std;

class Box
{
    int l, b, h;

public:
    Box()
    {
        l = b = h = 1;
        cout << "Default constructor called" << endl;
    }

    Box(int x, int y, int z)
    {
        l = x;
        b = y;
        h = z;
        cout << "Parameterized constructor called" << endl;
    }

    Box(Box &obj)
    {
        l = obj.l;
        b = obj.b;
        h = obj.h;
        cout << "Copy constructor called" << endl;
    }

    int volume()
    {
        return l * b * h;
    }

    ~Box()
    {
        cout << "Destructor called for box with volume " << volume() << endl;
    }
};

int main()
{
    Box b1;
    Box b2(2, 3, 4);
    Box b3(b2);

    cout << "\nVolume of b1 = " << b1.volume() << endl;
    cout << "Volume of b2 = " << b2.volume() << endl;
    cout << "Volume of b3 = " << b3.volume() << endl << endl;

    return 0;
}