// Ex7_10.cpp
  // Using the pointer this
  include <iostream>
  using std::cout;
  using std::endl;
  
  class CBox                             // Class definition at global scope
  {
    public:
      // Constructor definition
      CBox(double lv = 1.0, double bv = 1.0, double hv = 1.0)
      {
        cout << endl << "Constructor called.";
        m_Length = lv;                   // Set values of
        m_Width = bv;                    // data members
        m_Height = hv;
      }
  
      // Function to calculate the volume of a box
      double Volume()
      {
        return m_Length*m_Width*m_Height;
      }
  
      // Function to compare two boxes which returns true (1)
      // if the first is greater than the second, and false (0) otherwise
      int Compare(CBox xBox)
      {
        return this->Volume() > xBox.Volume();
      }
  
    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 match(2.2, 1.1, 0.5);           // Declare match box
    CBox cigar(8.0, 5.0,1.0);            // Declare cigar box
  
    if(cigar.Compare(match))
      cout << endl
           << "match is smaller than cigar";
    else
      cout << endl
           << "match is equal to or larger than cigar";
  
    cout << endl;
    return 0;
  }