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

Contacts manager data and image facebook sync, Project Description: coll...

Project Description: collect / modify person records / photo images/ lookup / facebook iphone and ipad App basic function : 1 user will configure facebook connection

Asdas, Ask question #Miniasdasmum 100 words accepted#

Ask question #Miniasdasmum 100 words accepted#

Define four facilities provided by c language preprocessor, Define Four Fac...

Define Four Facilities Provided by C Language Preprocessor? The C language preprocessor provides four separate facilities that you can use as you see fit:   Inclusion

Explain about the expressions in c language, Explain about the Expressions ...

Explain about the Expressions in c Language? An expression is the combination of constants, variables and operators arranged as per the syntax of the language. Some of the illu

#title. RETIRED ON SOCIAL SECURITY., IS IT POSSIBLE FOR YOU TO WRITE A PR...

IS IT POSSIBLE FOR YOU TO WRITE A PROGRAM FOR ME TO MEASURE EXISTING ANGLES AND DO IF AND THEN FROM THIS , AND TO PLACE FIXED ANGLES AT CERTAIN POSITION AS A ADD WITH DLL FOR CERTA

Create a program that converts numbers to characters, People sometimes give...

People sometimes give their phone numbers using one or more alphabetic characters. Create a program that converts the alphabetic characters to their corresponding numbers. For exam

Inside and outside type casting, depth description of the inside and outsid...

depth description of the inside and outside typecasting

Program of cascading, Program of cascading: class vector{          ...

Program of cascading: class vector{                 private :                 int v[3];                   public:                 friend istream & operator >> (

Wap to print numbers from 1-50 which are divided by 7, WAP TO PRINT NUMBERS...

WAP TO PRINT NUMBERS FROM 1-50 WHICH ARE DIVIDED BY 7 void main () { int a; clrscr (); a=1; while (a { if (a%7==0) printf ("%d\n",a); a++; } ge

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