The course work. Programming in C++

Subject: Website Visitability Programme

Develop a program that uses the basic concepts of OOP: inheritance (simple and multiple), polymorphism, incapsulation. The program must have the possibility of:
(a) to add objects to the mass, remove and edit them;
(b) to save the results of the program performance in the file and to read them from the file;
c) to display the results on the screen in the form of a table;
d) to sort according to the specified field.