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C++(introduction)

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JeevanandhamSubraman

The document discusses object-oriented programming concepts. It defines a class as a blueprint that defines an object's characteristics like data members and methods. Objects in OOP are based on real world objects that have properties and behaviors. OOP offers benefits like better code reusability, manageability, and flexibility compared to traditional programming. Key concepts discussed include encapsulation, inheritance, polymorphism, and abstraction. Examples are provided to explain departments in a company and a polygon class being used to represent polygon objects.

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C++(introduction)
C++(introduction)
Session Objectives Define Class & Objects Characteristics of OOPS Introduction to Objects
All around us in the real world are objects. Each object has certain characteristics and exhibits certain behaviour
C++(introduction)
Data Color : Black Year : 2008 Actions Start Stop Accelerate OBJEC T
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.
Why OOPs Concept are Used? The drawbacks of Traditional Programming approach are Unmanageable Programs Code Reusability not Optimum Problems in Modification of Data Difficulty in Implementation
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.
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
Object Oriented Approach Problem Identification Analysis Design Development Testing Implementation Maintenance
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
Encapsulation Data Abstraction Inheritance Polymorphism Class
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)
Encapsulation Not accessible from outside class Accessible from outside class Private Public Class
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.
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
It is the process of creating a new class from an existing class
Reusability Programs can be broken into reusable objects Existing classes can be used with additional features Shape
Benefits of Inheritance
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
Class - Artiste Dancer PoetSculptor Class : Shape Methods : Draw Move Initialize Subclasses
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.
For Example Polygon objects Polygon class Properties Vertices Border Color Fill Color Methods Draw Erase Move Abstract into
C++(introduction)

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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 Color : Black Year : 2008 Actions Start Stop Accelerate OBJEC T
  • 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 OOPs 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
  • 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
  • 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