Explain nested classes, C/C++ Programming

Assignment Help:

Nested Classes

Many a times, it becomes essential to have a class contain properties of two other classes. One way is to explain a class within another - that is a class with member classes also known as nested classes. This has nothing to do with inheritance. Another way is multiple inheritance , which will be discussed later.

e.g.

                class Aclass

                 {

                  public :

                                                Aclass(int pv)

                                                 {

                                                                private_variable_A = pv;

                                                 }

  private :

                                                int private_variable_A;

                                  };

 

                class Bclass

                 {

                  public :

                                                Bclass(int bpv, int apv): Aobj(apv)

                                                 {

                                                                private_variable_B = bpv;

                                                 }

                  private :

                                                int private_variable_B;

                                                Aclass Aobj;        // Declaring an object here.

                  };

 

As can be seen , the class Bclass have an object Aobj in its private section as one of its members. Also, it have a constructor function with the similar name, to which the two variables passed are bpv and apv. The variable bpv is used to initialize the private variable of Bclass.

Though, the constructor contains something after the colon. The part after the colon in the definition of a constructor is known as initialization section and the actual body of the constructor is known as assignment section . Initialization section initializes the base class members, while assignment section contains statements to initialize the derived class members.

 


Related Discussions:- Explain nested classes

Lexicographically preceding permutation, Given an integer n and a permutati...

Given an integer n and a permutation of numbers 1, 2 ... , n-1, n write a program to print the permutation that lexicographically precedes the given input permutation. If the given

Program that print the number of hops, You are working for a computer gamin...

You are working for a computer gaming company and have been asked to look at a survival game.  You will be simulating a rabbit stranded on an island, collecting a large number of s

Area under curve, progarm in c for area under curve   #include ...

progarm in c for area under curve   #include float start_point, /* GLOBAL VARIABLES */ end_point, total_area; int numtraps;

Assignment, write a simple c++ program to that use the value to add five nu...

write a simple c++ program to that use the value to add five number .your program should prompt the user to enter these five numbers one after the other

Read writers problem, Readers Writers with Processes and Threads Write two ...

Readers Writers with Processes and Threads Write two programs implementing ``reader pritority readers-writers synchronization'''' on files. One program will use processes, created

It/218.., Write a program that does the following: Calculates the Velocity ...

Write a program that does the following: Calculates the Velocity and Momentum of an object. The formula for the velocity is V=d/t and the formula Momentum is m=mass*velocity. Your

Computer programing, pls give me answer 01110-00110 in 2''s comlpiment in d...

pls give me answer 01110-00110 in 2''s comlpiment in detail

What is a recursive function, Question 1 Write a program in ‘C' to check w...

Question 1 Write a program in ‘C' to check whether a given number is even or odd Question 2 Explain while and do... while loop with an example Question 3 Write a program

File, how i can open a file

how i can open a file

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