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

I want to convert atmel c code into arduino mppt, Normal 0 fals...

Normal 0 false false false EN-US X-NONE X-NONE

Board coloring, color representation 0,1,2,3,4,5,6,7...

color representation 0,1,2,3,4,5,6,7...

String program, Write a C++ program which does the following: 1. Asks th...

Write a C++ program which does the following: 1. Asks the user to enter the following text "Four score and seven years ago there was a man named Joey Bagadonuts." 2. Save thi

Queue, program to enter 5 values in queue and remove value one by one from ...

program to enter 5 values in queue and remove value one by one from queue.

Explain the shift operators, The Shift Operators There are 2 shift oper...

The Shift Operators There are 2 shift operators : left shift ( >). These are binary operators. The format is                 operand >> number or operand   The first

Example of pointers, #include "stdafx.h" #include iostream using name...

#include "stdafx.h" #include iostream using namespace std; int _tmain(int argc, _TCHAR* argv[]) {             int NumbHold[5];             int * ptrNumb;

Explain type casting, Type Casting Implicit type conversions, as allowe...

Type Casting Implicit type conversions, as allowed by the language, can lead to errors creeping in the program if care is not taken. Thus, explicit type conversions may be used

Problem : Change to palindrome, A palindrome is a string that reads the sam...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

C program to display a rectangle, Aim: To implement a program to display a...

Aim: To implement a program to display a rectangle, circle and triangle. Code:                       class shape {             public:                         vir

Write a function that takes in radius and cover screen, Write a function th...

Write a function that takes in a radius and evenly covers the screen with circles of that radius. Don't attempt to draw any circles that are completely off the screen.

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