A base class Animal has been provided with a virtual function sound() that prints "Animal sound" and a virtual destructor.

A derived class Cat publicly inherits from Animal.

Your task is to override the sound() function in the Cat class so that it prints "Meow".

The test will create a Cat object through a base class pointer and call sound(). Because sound() is virtual, the derived version will be called. This is called polymorphism.

Do NOT include a main function. Your code will be tested automatically.

Expected output:
Meow