C++ OOP
C++ Object-Oriented Programming (OOP)
C++ is an extension of the C language that adds Object-Oriented Programming (OOP) features. If you are coming from C, you are used to procedural programming, where a program is written as a sequence of instructions or functions.
OOP is a different way of thinking. Instead of focusing just on functions, it focuses on objects, which contain both data and the functions that manipulate that data.
Procedural vs. Object-Oriented Programming
- Procedural Programming is about writing procedures or functions that perform operations on the data. It separates the data from the functions.
- Object-Oriented Programming is about creating objects that contain both data and functions.
Why Use OOP?
Object-oriented programming offers several major advantages, making it essential for modern software development:
- Faster and easier to execute: Code is more structured and modular.
- Provides a clear structure: By grouping related data and functions together.
- "Don't Repeat Yourself" (DRY) principle: OOP allows you to reuse code, which makes the code easier to maintain, modify, and debug.
- Creates reusable applications: With less code and shorter development time.
The Four Pillars of OOP
Understanding OOP means understanding its four core principles. We will cover these in detail in upcoming lessons, but here is a quick overview:
- Encapsulation: Hiding the internal state of an object and requiring all interaction to be performed through an object's methods (functions).
- Abstraction: Hiding complex implementation details and showing only the essential features of the object.
- Inheritance: Creating new classes based on existing classes, promoting code reuse.
- Polymorphism: Allowing objects of different types to be treated as objects of a common type, usually through a shared interface.
In the next tutorial, we will look at the two main aspects of OOP: Classes and Objects.