ex7_09.cpp

Visual C++ 2005的源代码

// 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
    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;
    }

  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(78.0, 24.0, 18.0);
   CBox box2 = box1;                   // Initialize box2 with box1

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

   cout << endl;
   return 0;
}