Pure virtual functions define interfaces without implementation.

They enforce derived classes to provide their own implementation.

Abstract classes cannot be instantiated due to pure virtual functions.

Virtual functions have default implementations, unlike pure virtual functions.

Pure virtual functions facilitate polymorphism and code reusability.

They serve as blueprints for derived classes, ensuring adherence to a contract.

Overuse of pure virtual functions can lead to complex class hierarchies.

Multiple inheritance is allowed with abstract classes containing pure virtual functions.

Virtual destructors are recommended in abstract classes for proper cleanup.

Objects of abstract classes cannot be created directly, only through derived classes.

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