Method getWeight

Examples/NoModules/Chapter 14/Ex14_07A/Carton.h:45–49

  }

  double getWeight() const
  {
    return 2.0 * (m_length * m_width + m_width * m_height + m_height * m_length) 
               * m_thickness * m_density;
  }

private:
  std::string m_material {"Cardboard"};