Method showVolume

Examples/NoModules/Chapter 15/Ex15_09/Box.h:13–14

Function to show the volume of an object

  // Function to show the volume of an object
  void showVolume() const
  { std::cout << "Box usable volume is " << volume() << std::endl; }

  // Function to calculate the volume of a Box object
  virtual double volume() const { return m_length * m_width * m_height; }