The original title is: "C++ Abstraction Cheat Sheet: Abstract Classes, Pure Virtual Functions, and Polymorphism"

Short summary

A concise C++ abstraction cheat sheet covering abstract classes, pure virtual functions, and runtime polymorphism for quick interview revision. Uses a payment gateway example to show abstraction in production. Compares abstract vs pure abstract classes and abstraction vs encapsulation.

• •Covers abstract classes, pure virtual functions, and runtime polymorphism
• •Payment gateway example illustrates abstraction in practice
• •Compares abstract vs interface-style classes and abstraction vs encapsulation

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