Programming Class Objects

OBJECT ORIENTED PROGRMMING

Class

            a calss defines the str & behaviour (data ;code) taht'll be shared by set of objects......

Objecet

            a combination of data & behaviour......

there r two types of persons involved wth classes ......

1.  class developer 

2.  calss programmer

class developer develops class n two steps ..

            a. interface       which'll  seen by programmer e,g  btns of VCR...

b.implementation  which'll be hidden by class programmer e,g circuits of VCR..

Constructors

                        a constructor s a member func wth same name as class , that s executed automatically when ever an obj s ceated....

                                   

Conditions For Constructors

            1. const r sp func having same name as class

            2.no return type even void isn't allowed

            3.const s automatically called when obj s created..

Constructs

            r  of  two types

            1. data constructs : e,g str & class , ends wth semicolon....

            2. control constructors: e,g function & loops , don't end wth semicolon......

Destructors

            s a member func wth same name as it's class but proceded by a telda(~)..

            it s called when an obj s destroyed , a destructor takes  no  argument & has no return type...

Order Of Execution

            constructor:: form parent to child

            destructor::  from child to parent

            function:::   from child to parent

Member Functions

            functions that r included wth in a class r know as member func

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