Class Box

Examples/NoModules/Chapter 15/Ex15_07/Box.h:5–26

#include <iostream>

class Box
{
public:
  Box() : Box{ 1.0, 1.0, 1.0 } {}
  Box(double l, double w, double h) : m_length {l}, m_width {w}, m_height {h} {}
  
  // Uncomment virtual to ensure destructors of derived classes are called correctly
  /*virtual*/ ~Box() { std::cout << "Box destructor called" << std::endl; }
  
  // More typical declaration of the destructor of a base class
  // virtual ~Box() = default;

  // 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; }

protected:      // Should be private in production-quality code (add getters to access)
  double m_length, m_width, m_height;
};

#endif