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OBJECT ORIENTEDPROGRAMMING

By:-

SHALLIN PARTAP SINGH

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How it started?

Long programs were quiet complex and was

not well organized.

Simula 67 was the first language to introduce

the concept of OOPS.

Now a days called Simula: Simple Universal

Language

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Example procedure with two input and one output parameters in Simula:

Begin

Procedure RightText(T, N, FitsIn); Text T; Integer N;

Name FitsIn; Boolean FitsIn;Begin

Integer I;

FitsIn := N >= T.Length;

For i:=1 step 1 until N-T.Length do OutText(" ");

OutText(T)End of RightText;

RightText("Short", 30); OutImage;

RightText("And the long one", 30);

End of Program;Output:

Short

And the long one

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Object Oriented Programming

Object-oriented programming (OOP) is

a programming paradigm that uses "objects"and their interactions to design applications

and computer programs.

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Fundamental Concepts

Object

Class

Inheritance Encapsulation

Polymorphism

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Object

Anything, having certain properties, is object.

Data and functions are binded together to

form an object.

Each object has an identity and is

distinguishable.

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Obj Osama Obj Kalam

Both the objects have an identity and are distinguishable

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Class

A class is a blueprintorfactorythat describes

the nature of something.

A class is a group of objects of same attribute

and common behaviours.

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Obj Osama Obj Kalam

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//program to show the use of object and class

#include

class display{

int a,b;

public:

display()

{

a=10;b=20;

cout

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Inheritance

Subclasses(derived classes) of a class

inheritthe attributes and behaviours

of parent class.

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Every Mc Donalds restaurant, in the entire world,

inheritthe logo (a feature) from the place where it was

already created.

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Encapsulation

It is wrapping up of data and related functions

in a single unit.

It keeps data safe from external interference

and misuse.

Data hiding: hide the data of a class from

outside world.

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A cycle factory model implementing concept of OOPS

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//program to show inheritance

and encapsulation

#includeclass display

{

int a,b;

public:

display(){

a=10;

b=20;

cout

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Polymorphism

Polymeans manyand morph meansforms,

many forms.

Concept of one interface that can be used to

perform related but different tasks.

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Polymorphism

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//program to show polymorphism

#include

int math(int,int);

int math(int);

void main()

{

int a;

couta;

cout

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THANK YOU!

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