Lesson 1 - Object Oriented Programming CPP103.pptx

Lesson 1 - Object Oriented Programming CPP103.pptx

• 1.
  CPP103 Object-Oriented Programming
• 2.
  Object-Oriented Programming
• 3.
  What is OOP? •Object-oriented programming (OOP) is a computer programming model that organizes software design around data, or objects, rather than functions and logic.
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  Class • Class iscomparable to an object’s blueprint.
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  Objects • Object isan element (or instance) of a class; objects have the behaviors of their class.
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  Four (4) pillarsof OOP
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  Encapsulation • Encapsulation meanscontaining all important information inside an object, and only exposing selected information to the outside world. This principle hides the internal software code implementation inside a class and hides internal data inside of objects. Encapsulation requires defining some fields as private or public.
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  Abstraction • Abstraction meansthat the user only interacts with selected attributes and methods of an object. It uses simple things to represent complexity, the main goal is to hide complexity details from the user.
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  Inheritance • Inheritance isone of the most important aspects of OOP. It allows classes to inherit features of other classes. Put another way, parent classes extend attributes and behaviors to child classes. Inheritance supports reusability.
• 10.
  Polymorphism • Polymorphism literallymeans “many forms”. This principle focuses on designing objects to share behaviors. Building from inheritance, polymorphism allows the same method to execute different behaviors in two ways: method overriding and method overloading.
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  Advantages of OOP
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  1. Enables codereusability • The idea of inheritance is one of the critical concepts offered by object-oriented programming. A class’s attributes can be passed down through inheritance, eliminating the need for duplication of effort. Doing this prevents the problems associated with repeatedly writing the same code.
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  2. Increases productivityin software development • We can create programs from pre-written, interconnected modules rather than having to start from scratch, which would save time and increase productivity. Thanks to the OOP language, we can break the software into manageable, discrete problems. Because it allows for the division of labor in the creation of object-based programs, object-oriented programming is modular.
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  3. Makes troubleshootingsimpler • When object-oriented programming is used, troubleshooting is made simpler since the user knows where to look in the code to find the source of the problem. Since the error will indicate where the issue is, there is no need to inspect additional code areas.
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  4. Reinforces security •We can create programs from pre-written, interconnected modules rather than having to start from scratch, which would save time and increase productivity. Thanks to the OOP language, we can break the software into manageable, discrete problems. Because it allows for the division of labor in the creation of object-based programs, object-oriented programming is modular.
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  5. Provides designadvantages • A significant development in software engineering has been object-oriented development. Among other things, it promises to shorten development duration and give firms a competitive advantage.
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  Lab. Activity 2 •Convert Activity 1 problem 9 to OOP paradigm