Abstract Classes and Interfaces — Designing Extensible Frameworks
In our previous lecture, we explored virtual and pure virtual functions.We saw how a virtual function allows different derived classes to perform the same action in their own way — like different employees performing their duties differently. We also discovered that a pure virtual function acts as a promise — a function that must be implemented by every derived class.This is where abstract classes emerge. An abstract class can be imagined as a template or blueprint — it tells us…