Principles and advantages of oop ppt

c++ ppt

1. Object Oriented Programming With C++ Principles and advantages of oop

2. CONCEPTS OF OOP Class object Inheritance Abstraction Encapsulation Polymorphism

3. CLASS A class is a collection of objects of similar type. Example:- mango, apple and orange are members of the class fruit. Classes are user-defined data type and built-in type of a programming language. fruit mango: will create an object mango belonging to the class fruit

4. OBJECT Object are the basic run time entity in an object –oriented system. They may represent a person, a place, a bank account, a table of data or any item that program has handle.

5. Example of objects OBJECT : emp DATA : Emp_no Name Age Salary FUNCTIONS : Getdata (input) Total (find total salary) Display (output)

6. INHERITANCE It is the capability of one class to inherit properties from another class. 5 types of inheritance Single level Multilevel Multiple Hierarchical Hybrid

7. Single level inheritance Base class Flower Rose Derived class Single level

8. Multi level inheritance Base class Rajasthan Jaipur World India Multi level

9. Multiple inheritance Bird Parrot Sparrow Multiple inheritance Base class Derived class

10. ABSTRACTION Definition- The act of representing essential features without including the background details or explanations. Classes uses the concept of abstraction and are defined list of abstract attributes. The attributes are sometime called as data members because they hold information. The function that operates on these data are sometimes called methods or member function.

11. ENCAPSULATION Definition :- The wrapping up of data and functions into a single unit. Data encapsulation is the most striking feature of class. Encapsulation means that some or all of an object's internal structure is "hidden" from the outside world.

12. POLYMORPHISM polymorphism is the ability of objects of different types to respond to functions of the same name.

13. Types of polymorphism Virtual functions. Operator overloading. Function overloading.

14. ADVANTAGES OF OOP Through inheritance, we can eliminate code and extend the use of existing classes. Reusability. Easy to understand. Models the real world well. The principle of data hiding helps the programmer to build secure programs. Software complexity can be easily managed.

15. It is essay to partition the work in a project based on object. Software complexity can be easily managed. Object –oriented system can be easily upgraded from small to large system.