C++ Introduction

3. Session Objectives
Define Class & Objects
Characteristics of OOPS
Introduction to Objects

4. All around us in the
real world are
objects.
Each object has
certain
characteristics and
exhibits certain
behaviour

6. Data
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Year : 2008
Actions
Start
Stop
Accelerate
OBJEC
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7. The Object-Oriented
Approach - III
PersonnelAccounts Sales
The real world around is full of objects .We can consider both living
beings as well as things as objects.For example,the different
departments in a company are objects.

8. Why OOP’s Concept are Used?
The drawbacks of Traditional Programming
approach are
Unmanageable Programs
Code Reusability not Optimum
Problems in Modification of Data
Difficulty in Implementation

9. Object – Oriented Programming
Accounts
Data
Employee details
Salary statements
Bills
Vouchers
Reciepts
Functions
Calculate salary
Pay salary
Pay bills
Tally accounts
Transact with banks
Here the application has to implement the entities as they are
seen in real life and associate actions and attributes with each.

10. Benefits of Object Oriented Programming approach
are -
 OOP offers better implementation
 OOP offers better data security
 OOP offers better code reusability
 OOP offers more flexibility
 OOP offers better manageable programs
 Large complexity in the software development
can be easily managed
 User defined datatypes can be easily constructed

11. Object Oriented Approach
Problem
Identification Analysis
Design
Development
Testing
Implementation
Maintenance

12.  Data acquisition Systems
 Client/Server Computing
 Object –Oriented Database applications
 Artificial Intelligence and expert systems
 systems such as process control, temperature control etc.
 GUI based system such as Windows Applications
 Computer Aided Design and manufacturing Systems

13. Encapsulation
Data Abstraction
Inheritance
Polymorphism
Class

14. Grouping of data and methods into a
single entity is known as Data
Encapsulation
It is a technical name for
information hiding. (i.e data hiding or
data security)

15. Encapsulation
Not accessible from
outside class
Accessible from outside
class
Private
Public
Class

16. Data abstraction enhances security as use
of data is restricted to certain functions
only.
Abstraction is more used where you
want only a certain number of
functions/methods are accessing data.

17. Attributes
Methods
Class
For Example
Data abstraction is a process of
identifying properties and
methods related much to a
particular entity as relevant to the
application

18. It is the process of
creating a new class from
an existing class

19. Reusability
Programs can be
broken into reusable
objects
Existing classes can be
used with additional
features
Shape

20. Benefits of Inheritance

21. • polymorphism allows a programmer to
purse a course of action by sending a
message to an object without concerning
about how the software system is to
implement the action
Simply defined as “Same thing
can behave different ones”

22. Class -
Artiste
Dancer PoetSculptor
Class : Shape
Methods :
Draw
Move
Initialize
Subclasses

23. A class is what defines all the data
members and the methods that an object
should have.
The class defines the characteristics that
the object will possess; it could also be
referred to as a blueprint of the object.

24. For Example
Polygon
objects
Polygon class
Properties
Vertices
Border Color
Fill Color
Methods
Draw
Erase
Move
Abstract
into