Explain public derivation, C/C++ Programming

Assignment Help:

Public derivation

Public derivations are much more common than private derivations. In this situation:

  • The private members inherited from the base class are inaccessible to new members' functions in the derived class.
  • The public members inherited from the base class might be accessed by new members functions in the derived class and by instances of the derived class.

 e.g.

                class base

                 {

                  private :

                                                int number;

                 };

                class derived : public base

                 {

                  public :

                                                void f()

                                                 {

++number;     // Private base member not

                 accessible

                                                 }

                 };

The compiller error message is ' base :: number ' is not accessible in the function derived::f();

Here, only if the number is public then you can access it.

 

 


Related Discussions:- Explain public derivation

Constructor, Why copy constructor accepts reference to an object and not t...

Why copy constructor accepts reference to an object and not the object itself, whether ah hence it we do otherwise

Program create a user defined data structure - c++ program, Create a user-d...

Create a user-defined data structure (struct) called Node that represents a node within a linked list where the "data" stored in each node is a pointer to a Car object.    a) Wr

When i develop a destructor, When I develop a destructor, do I require to e...

When I develop a destructor, do I require to explicitly call the destructors for my member objects?

Structures, please answer the question of following Write a function that c...

please answer the question of following Write a function that calculates the number of elapsed days between two dates. For example the days between Feb 3, 1970 and June 21, 1980? B

Algorithm, Algorithm for railway ticket booking process

Algorithm for railway ticket booking process

Last ant on rod, There are ''''n'''' ants on a ''''n+1'''' length rod. The ...

There are ''''n'''' ants on a ''''n+1'''' length rod. The ants are numbered from 1 to n and are initially placed at positions starting from position 1 till position n. They are mov

File, how i can open a file

how i can open a file

Coding, I want MODI method''s coding in c++ using all concepts of c++..plea...

I want MODI method''s coding in c++ using all concepts of c++..please help me its my project work...

Miss, Depreciation to a salvage value of 0. For tax purposes an item m...

Depreciation to a salvage value of 0. For tax purposes an item may be depreciated over a period of several years, n. With the straight line method of depreciati

Padovan string , write a program that counts the number of occurences of th...

write a program that counts the number of occurences of the string in the n-th Padovan string P(n) program in java // aakash , suraj , prem sasi kumar kamaraj college progr

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd