ex8_03.cpp

Beginning Visual C++ 6源码。Wrox。

// EX8_03.CPP
// Using a constructor
#include <iostream>
using namespace std;

class CBox                                   // Class definition at global scope
{
   public:
      double m_Length;                       // Length of a box in inches
      double m_Breadth;                      // Breadth of a box in inches
      double m_Height;                       // Height of a box in inches

      CBox(double lv, double bv, double hv)  // Constructor definition
      {
         cout << endl << "Constructor called.";
         m_Length = lv;                      // Set values of
         m_Breadth = bv;                     // data members
         m_Height = hv;
      }

      // Function to calculate the volume of a box
      double Volume()
      {
         return m_Length* m_Breadth* m_Height;
      }
};
   
int main()
{
   CBox box1(78.0,24.0,18.0);                // Declare and initialize box1
   CBox cigarBox(8.0,5.0,1.0);               // Declare and initialize cigarBox

   double boxVolume = 0.0;                   // Store the volume of a box here

   boxVolume = box1.Volume();                // Calculate volume of box1
   cout << endl
        << "Volume of box1 = " << boxVolume;

   cout << endl
        << "Volume of cigarBox = "
        << cigarBox.Volume();

   cout << endl;
   return 0;
}