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

#tit, Write a program to find the area under the curve y = f(x) between x =...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

Inheritance, example of program to add two number

example of program to add two number

Roshdy, While spending the summer as a surveyor’s assistant, you decide to ...

While spending the summer as a surveyor’s assistant, you decide to write a program that transforms compass headings in degrees (0-360) to compass bearings. A compass bearing consis

Define the char data type of c language, Define the Char Data Type of C Lan...

Define the Char Data Type of C Language? The char defines characters. The char type will usually require only 1 byte of internal storage. Every char type has an equivalent inte

Define encapsulation?, A:  it is containing and hiding Information regardin...

A:  it is containing and hiding Information regarding an object, like internal data structures and code. It isolates the internal complication of an object's operation from the res

Coding, padovan series with words

padovan series with words

Verification class, I need help to understand and do this assignment ******...

I need help to understand and do this assignment ********************************************************* You are to insert the missing code in the C program given for combinatio

Programming and solving problems, One person who is specialist at programmi...

One person who is specialist at programming and solving problems with a computer Project Description: Dear Potential computer, hardware, programming and software genius, I

Java code, Calculate the salary if the person work 8 hours/day and the sala...

Calculate the salary if the person work 8 hours/day and the salary/hour is RM5.20 - UML class diagaram -Class -Exception handling/assertion

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