Abstraction - Kamills-12/2143-OOP GitHub Wiki

Abstraction

Kade Miller

What Is Abstraction?

Abstraction is all about only what matters, and hiding the messy stuff underneath. It lets you focus on what something does, not how it does it.

Why It’s Useful:

  • Keeps code clean and focused.
  • Makes stuff easier to use and harder to break.
  • You hide complexity and only expose what’s needed.

Quick C++ Example (Abstract Class)

#include <iostream>
using namespace std;

// Abstract class
class Shape {
public:
    virtual void draw() = 0;  // pure virtual function
};

// Concrete class
class Circle : public Shape {
public:
    void draw() override {
        cout << "Drawing a circle." << endl;
    }
};

int main() {
    Shape* s = new Circle();
    s->draw();  // outputs: Drawing a circle.
    delete s;
    return 0;
}
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