Oop cocepts
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Transcript of Oop cocepts
Anu. S
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OOPS CONCEPTS IN C++
Disclaimer: This presentation is prepared by trainees ofbaabtra as a part of mentoring program. This is not officialdocument of baabtra –Mentoring PartnerBaabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt . Ltd
CONTENTS
OBJECT ORIENTED PROGRAMMING
DATA ABSTRACTION
INHERITANCE
DATA ENCAPSULATION
POLYMORPHISM
EXAMPLE
OBJECT ORIENTED
PROGRAMMING
Object oriented programming approach views a
problem in terms of objects involved.
OBJECTS
An OBJECT is an identifiable entity with some
characteristics and behaviour.
Example: Orange
Characteristics: spherical shapeorange colour
Behaviour: juicytastes sweet-sour
CLASS
A CLASS is a group of objects that share common
properties and relationships
Example: a CAR can be considered as
a class.
Objects in this class involves the
steering,wheels,engine.
Properties involve the
company,color,model,speed,engine
capacity,etc
EXAMPLE
class CS{
int studentid;
char name[100];
int totmks=0;
float avg;
int total(int marks[5])
{
for(i=0;i<5;i++)
{
totmks+=marks[i];
avg=totmks/5;
}
return balance;
}
};
class
objects CS stud1,stud2;
DATA ABSTRACTION
DATA ABSTRACTION
The act of representing essential features without including the background details or explanations.
Example:
A calculator
Only the results are displayed on the
screen
The user is unaware of its internal
processing
INHERITANCE
The capability of one class of things to inherit capabilities or properties from another class.
INHERITANCE
VEHICLES
automobiles Pulled vehicles
ENCAPSULATION
ENCAPSULATION
The wrapping up of data and operations or functions
into a single unit .
ENCAPSULATION
DEPARTMENT
PRODUCTION
PURCHASE
SALES
ACCOUNTS
MEMO
POLYMORPHISM
POLYMORPHISM
The ability for a data to be processed in more than one
form.
POLYMORPHISM
SHAPE
AREA()
CIRCLE
AREA(CIRCLE)
TRIANGLE
AREA(TRIANGLE)
RECTANGLE
AREA(RECTANGLE)
EXAMPLES
#include<iostream.h>class Item{
int itemno;float price;
public:void getdata(int i,float j){
itemno=i;price=j;
}};
const int size=10;Item order[size];int main(){
int ino;float cost;//get value for all itemsfor(int a=0;a<size;a++){
cout<<"Enter itemno & price for item"<<a+1<<"\n";cin>>ino>>cost;order[a].getdata(ino,cost);
}return 0;}
Item 1Itemno:111 price:155Item 2Itemno:125 price:89Item 3Itemno:201 price:95Item 4Itemno:352 price:213Item 5Itemno:444 price:250
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