Polymorphism Through a Base Reference

Virtual dispatch works through base REFERENCES, not only pointers.

Base class Speaker has a virtual method string speak() const returning "...".

Create a derived class Human that overrides speak() to return "Hello".

The runner binds a Speaker& reference to a Human and calls speak() through it. Because speak() is virtual, the program prints:
Hello

Do NOT write a main function.

Expected Output:

Hello

Topics:

Inheritance

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