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

If statement, Write a program to input two integers. If they are equal disp...

Write a program to input two integers. If they are equal display "The numbers are equal". Otherwise display a message if the first is a multiple of the second or if it is not a mul

Described multiple inheritance(virtual inheritance)?, Described multiple in...

Described multiple inheritance(virtual inheritance)? And explain its advantages and disadvantages? A: It is the procedure in which a child can be derived from more than one pare

Program of conversion between objects of different classes, Conversion betw...

Conversion between Objects of Different Classes As the compiler does not know anything about the user-defined type, the conversion instructions are to be specified in a functio

Loop statement, write a c++ program to accept 3 numbers and find the larges...

write a c++ program to accept 3 numbers and find the largest of 3 numbers

Program to design list in c, Program to design list in c: Write a prog...

Program to design list in c: Write a program in c to insert the values in list void main() { int i=0; char a[20]; clrscr(); printf("Enter the line\n");

Define internal static storage class - computer programming, Define Interna...

Define Internal static storage class - computer programming? The Internal static variables are those that declared inside a function. The scope of the internal static variables

Binary search tree is constructed by repeatedly, Assume that a Binary Searc...

Assume that a Binary Search Tree is constructed by repeatedly inserting exact values in to the tree. Argue that the number of nodes examined in searching for a value in the tree is

Luminous Jewels - The Polishing Game, Byteland county is very famous for lu...

Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various luminous jewels of particular colour. Nec

Plugging the memory leak, Problem #1: plugging the memory leak. When you em...

Problem #1: plugging the memory leak. When you employ the "normal" new operator, for example Foo* p = new Foo(), the compiler generates some special code to manage the case while t

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