// Ex7_09.cpp
// Initializing an object with an object of the same class
#include <iostream>
using std::cout;
using std::endl;

class CBox                             // Class definition at global scope
{
public:
  // Constructor definition
  explicit CBox(double lv = 1.0, double wv = 1.0, double hv = 1.0) :
    m_Length( lv ), m_Width( wv ), m_Height( hv )
  {
    cout << "Constructor called." << endl;
  }

  // Function to calculate the volume of a box
  double Volume()
  {
    return m_Length*m_Width*m_Height;
  }

private:
  double m_Length;                     // Length of a box in inches
  double m_Width;                      // Width of a box in inches
  double m_Height;                     // Height of a box in inches
};

int main()
{
  CBox box1( 1.0, 2.0, 3.0 );
  CBox box2( box1 );                   // Initialize box2 with box1
  CBox box3( box1 );                   // Initialize box2 with box1

  cout << "box1 volume = " << box1.Volume() << endl
    << "box2 volume = " << box2.Volume() << endl
    << "box3 volume = " << box3.Volume() << endl;

  return 0;
}