Virtual Destructor Cleanup

When you delete a derived object through a base pointer, the base destructor MUST be virtual so the derived destructor also runs.

Base class Resource has a destructor that prints "Base destroyed". Make that destructor virtual.
Derived class FileResource (already written) has a destructor that prints "Derived destroyed".

When a FileResource is deleted through a Resource*, destructors run derived-first, so the program prints exactly:
Derived destroyed
Base destroyed

Do NOT write a main function.

Expected Output:

Derived destroyed
Base destroyed

Topics:

Inheritance

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Test Cases

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