Object-Oriented Programming

2. Object-Oriented Programming

3. Agenda • Classes • Attributes • Properties • Methods (Functions) • Constructor • Passing Parameters By Reference & Value • Access Modifiers • Interfaces • Polymorphism • Overriding

4. Classes

5. <access modifier> class class_name Class Definition Note: • Access modifier specify the access rules for the members as well as the class itself, if not mentioned then the default access for the members is private. • To access the class members, you will use the dot (.) operator. • The dot operator links the name of an object with the name of a member.

6. Class Features: • Attributes<access modifier> <data type> variable1; <access modifier> <data type> variable2; • Properties<access modifier> <data type> prop_name { get{ } set{ } } • Methods<access modifier> <return type> method name(Parameter) { Method Body } • Constructor<access modifier> class name(Parameter)

7. Passing Parameters By Reference & Value

8. Access Modifiers

9. List of Access Modifiers: • Public • Private • Protected • Internal • Protected internal

10. Interfaces

11. An interface is defined as a syntactical contract that all the classes inheriting the interface should follow. • The interface defines the 'what' part of the syntactical contract and the deriving classes define the 'how' part of the syntactical contract.

12. Polymorphism

13. Static Polymorphism: • Function overloading • Operator overloading • Dynamic Polymorphism

14. Overriding

15. Summary: • Classes • Classes Features • Access Modifiers • Interfaces • Polymorphism

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