Skip to main content

C++ OOPs Concepts

C++ OOPs Concepts

The major purpose of C++ programming is to introduce the concept of object orientation to the C programming language.

Object Oriented Programming is a paradigm that provides many concepts such as inheritance, data binding, polymorphism etc.

The programming paradigm where everything is represented as an object is known as truly object-oriented programming language. Smalltalk is considered as the first truly object-oriented programming language.

OOPs (Object Oriented Programming System)

Object means a real word entity such as pen, chair, table etc. Object-Oriented Programming is a methodology or paradigm to design a program using classes and objects. It simplifies the software development and maintenance by providing some concepts:

Cpp Oops concept 1
  • Object
  • Class
  • Inheritance
  • Polymorphism
  • Abstraction
  • Encapsulation

Object

Any entity that has state and behavior is known as an object. For example: chair, pen, table, keyboard, bike etc. It can be physical and logical.

Class

Collection of objects is called class. It is a logical entity.

Inheritance

When one object acquires all the properties and behaviours of parent object i.e. known as inheritance. It provides code reusability. It is used to achieve runtime polymorphism.

Polymorphism

When one task is performed by different ways i.e. known as polymorphism. For example: to convince the customer differently, to draw something e.g. shape or rectangle etc.

In C++, we use Function overloading and Function overriding to achieve polymorphism.

Abstraction

Hiding internal details and showing functionality is known as abstraction. For example: phone call, we don't know the internal processing.

In C++, we use abstract class and interface to achieve abstraction.

Encapsulation

Binding (or wrapping) code and data together into a single unit is known as encapsulation. For example: capsule, it is wrapped with different medicines.

Advantage of OOPs over Procedure-oriented programming language

  1. OOPs makes development and maintenance easier where as in Procedure-oriented programming language it is not easy to manage if code grows as project size grows.
  2. OOPs provide data hiding whereas in Procedure-oriented programming language a global data can be accessed from anywhere.
  3. OOPs provide ability to simulate real-world event much more effectively. We can provide the solution of real word problem if we are using the Object-Oriented Programming language.



Anurag Rana Educator CSE/IT

Comments

Post a Comment

Popular posts from this blog

JAVA Scrollbar, MenuItem and Menu, PopupMenu

ava AWT Scrollbar The  object  of Scrollbar class is used to add horizontal and vertical scrollbar. Scrollbar is a  GUI  component allows us to see invisible number of rows and columns. AWT Scrollbar class declaration public   class  Scrollbar  extends  Component  implements  Adjustable, Accessible   Java AWT Scrollbar Example import  java.awt.*;   class  ScrollbarExample{   ScrollbarExample(){               Frame f=  new  Frame( "Scrollbar Example" );               Scrollbar s= new  Scrollbar();               s.setBounds( 100 , 100 ,  50 , 100 );               f.add(s);               f.setSize( 400 , 400 );               f.setLayout( null );               f.setVisible( true );   }   public   static   void  main(String args[]){           new  ScrollbarExample();   }   }   Output: Java AWT Scrollbar Example with AdjustmentListener import  java.awt.*;   import  java.awt.event.*;   class  ScrollbarExample{        ScrollbarExample(){               Frame f=  new  Frame( "Scro
Post a Comment
Read more

Difference between net platform and dot net framework...

Difference between net platform and dot net framework... .net platform supports programming languages that are .net compatible. It is the platform using which we can build and develop the applications. .net framework is the engine inside the .net platform which actually compiles and produces the executable code. .net framework contains CLR(Common Language Runtime) and FCL(Framework Class Library) using which it produces the platform independent codes. What is the .NET Framework? The Microsoft .NET Framework is a platform for building, deploying, and running Web Services and applications. It provides a highly productive, standards-based, multi-language environment for integrating existing investments with next-generation applications and services as well as the agility to solve the challenges of deployment and operation of Internet-scale applications. The .NET Framework consists of three main parts: the common language runtime, a hierarchical set of unified class librari
3 comments
Read more

C++ this Pointer, static, struct and Enumeration

C++ this Pointer In C++ programming,  this  is a keyword that refers to the current instance of the class. There can be 3 main usage of this keyword in C++. It can be used  to pass current object as a parameter to another method. It can be used  to refer current class instance variable. It can be used  to declare indexers. C++ this Pointer Example Let's see the example of this keyword in C++ that refers to the fields of current class. #include <iostream>    using   namespace  std;   class  Employee {       public :           int  id;  //data member (also instance variable)               string name;  //data member(also instance variable)            float  salary;          Employee( int  id, string name,  float  salary)             {                   this ->id = id;                  this ->name = name;                  this ->salary = salary;            }             void  display()             {                 cout<<id<< "  " <<name<&
Post a Comment
Read more