1. By Muhammad Waris Zargar
OOP
By Muhammad Waris Zargar

2. Introduction Basics Of Object Oriented Programming
Operator Overloading
Inheritance
Polymorphism
File Handling
Exception Handling

3. Basics Of Object Oriented Programming
Introduction Of OOP
Features Of OOP
Object
Classes
Real World Modeling
Reuse Ability
Information Hiding
Poly Morphism
Objects
Properties Of Object(MAN,CAR,TREE etc.)
Definition

4. Basics Of Object Oriented Programming
Function Of Objects
Classes
Definatin
Declaring A Class
Acces Specifire
Public
Private
Protected

5. Basics Of Object Oriented Programming
Creating Object
At Least 2 Programme
Defining Member Function Outside The Class
Constructor
Passing Parameter To The Constructor
Constructor Overloading

6. Basics Of Object Oriented Programming
Copy Constructor
Default Value To Constructor
Destructor
Object As A Function Parameter
Returning Object From Member Function
Static Data Member
Static Member Function
Friend Function
Friend Class

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8. Introduction Of OOP Basis Of Object Object Collection
Object Grouped To Gether

9. Features Of OOP Object:
It is collection of data member and member function.
Data Member:
Simply Variable in class are called data member.
Member Function:
Simply Function in class are called member function

10. Features Of OOP
Class:
Classes are used to create different object. Class is a user define data type which allows to group together data member and member function.
Class name{ Access Specifire;};
Real World Modeling:
OOP is based on real world modeling, things have properties and working capacities. Similirly object have data and function.

11. Features Of OOP
Reuseability OOP provide the facility to build a new class from already existence class (Inheritance) Advantage: Time Save And Less Complications Information Hiding: OOP provides the facilities to hide impotant information from user.

12. Object
It is collection of data and function. Every object has two features
Properties
Functionality or Working
Properties:
Man:
Name, age, color, height etc.
Car:
Color, Registration No, Model etc.
Functionality:
Eat, Sleep, Walk etc.
Start, Reverse, Break etc.

13. ACCESS SPECIFIRE
The method which is used to specify the access level of programme is called access specifire
Public:
This access specifier allows the user to access this data every where in the programme.
No provide restriction.
Private:
This access specifier restrict to the user and it is not allowed to access the data outside the class.
Protected:
This specifier is used to access data only in parent class and derive class

14. Scope Resolution Operator
Change Access Level of programe.
TO define member function outside the class.
Declare In the class
Defining outside the class
Return type class name :: function name(){ }

15. Constructor Same name as class name No return type
Automatic call by c++
It is used to initialized the data member
Class Waris{
Waris(){
Cout<<“I am constructor good by I am automatic call and no return type by”; } };

16. Passing Parameter To Constructor
Local variable or data member.
Class waris{
Public:
Int age;
Waris(int iage){
Age = iage;
Cout<<iage; } };
Int main(){
Waris W(20);

17. Constructor Overloading
Number Of parameter different Place different

18. Default value to constructor
When we pass parameter then assign value to the parameter
This is called default value to constructor
class waris{
Waris(int iage=0; string =“no name”){s } };
Int main(){
Waris w;
If I am pass value or not pass value, then also constructor run and generate no error.

19. Default Copy Constructor
A type of constructor i.e. used to initialized an object with an other object is of same class is called default copy constructor.
Its name as ”Default Copy Constructor ” because it is available by default in all classes.
The user does not need to write separate constructor.
It accept single object as a parameter.
The parameter for default copy constructor given in parenthesis or using assignment operator.
Class object (2nd Object);
Class object = 2nd object;

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21. Destructor
It is opposite to the constructor Same name as class name Tild (~) symbol is used before name It is automatic call when object goes out of scope To released the memory It is most used full for pointer ~ClassName(){ Cout<<“This is destructor”; }

22. New keyword It is used to allocate memory dynamically
It is allocate memory according to the type of pointer
It returns the address to the pointer
Pointer than work and collect data
It is used to create simple variable , object , array

23. Method: 2nd Int *ptr ; Ptr = new int 1st
Class name *ptr = new class name (parameter);
2nd
Int *ptr ;
Ptr = new int

24. Delete keyword It is opposite to the new keyword
It is used to release memory of Object, Data Member and Array
It is useful when we use pointer in class
It is used to released memory

25. Object As A Function Parmeter
It is same as we pass parameter in function but when we pass object as a meter
Then we use dot(.) operator to access the data.
Class waris{
Public:
Int age; string name;
Void in(waris w){
Cout<<“Enetr name and age”;
Cin>>w.age>>w.name;
Cout<<“name :: ”<<w.name<<w.age; } };
Int main(){
waris h;
h.in(h);

26. Return Object From Function
It is same as return simple variable
In function we make a temporary object and stored all value in object
Void fun(class_name object){
Class_name temp_object;
Cin>>temp_object.data_member;
Return temp_object; }

27. Static Data Member A = 10; B = 90;
Use of static key-word to declare of static data member.
This shared the location to all objects.
One variable is created in memory
If one change the value then all show the latest value.
A = 10;
A = 20
B = 90;
B = 30
c = 30;
C = 30;

28. Globally initialized the static data member i.e. after the class
Class waris{static int number; } ;
Return_type class_name :: variable = fixed-point;

29. Static Function
Static function is used to display only the value of static data member
Static void function(){ }

30. Friend Function
Normally the private and protected data member not access outside the calss.
But use of friend function make possible to access data member outside the class
But difference is that we define inside the class pass object of class as a parameter.
After class define the function body.
Class waris{
Friend return_type name(class_name oject); }
Return_type name(class_name object){
Body;

31. Friend Class
Normally the private and protected data member not access outside the calss.
But use of friend class make possible to access data member in other class
But difference is that we define inside the class.
And make function and pass object.
Class A{friend class B}; // this is called forward declaration
Class B{
Void fun(A obj, B obj2); }