Thread: Program using classes

You are splitting data from views of that data. You will have a class that stores a number. You will then have 4 other classes that present different views of an object of the data class. So in these view classes store an object of the data class and have a view method that prints the data in the required format. Use the public interface of the stored object to feed its value to the view class.

Code:

class data
{
     int num;

   public:
     int getnum() const
     { return num;}
};

class octalview
{
   data obj;

   public:
     void view() const
     { std::cout<<std::oct<<obj.getnum();}
};

or similar....

In fact on rereading this what you want is not to store an object in your view classes but rather a reference or better still a pointer to an object of class data. That way especially with the pointer approach you can easily switch the underlying data that the view is viewing.