More in a stucture: operations

struct box

{

  

    double dLength,dWidth,dHeight;

    double dVolume;

  

    double get_vol()

       {

         return dLength * dWidth * dHeight;

       }  

}            14.cpp   141.cpp

Class  

class box

{

   double dLength,dWidth,dHeight;

   double dVolume;

public: 

  

   double vol(){return dLength * 

 dWidth * dHeight;}

  

}   15.cpp

Public vs. private   

Public functions and variables are accessible from anywhere the object is visible

Private functions and variable are only accessible from the members of the same class and “friend”

Protected

 

 class

  class box

{

   double dLength,dWidth,dHeight;

   double dVolume;

public:   

   double vol() ;

}

dbouble box::vol()

{

return dLength * dWidth * dHeight;} 

 

}  16.cpp

Constructors

 

A special member function

 with the same name of the 

 

class

 

No return type (not void)

Executed when an instance

 

 of

 

 the class is the created

 

17.cpp

  

Deconstructors 

 

 

A special member function 

 

with no parameters

 

Executed when the class is

 

 destroyed 

 

18.cpp

 

 

 

 

 

 

 

 

 

structure operations