Virtual destructors must be used when:
A) The constructor in the base class is virtual.
B) delete is used on a base-class pointer to a derived-class object.
C) delete is used on a derived-class object.
D) A constructor in either the base class or derived class is virtual.

Question

Quizplus · Accepted Answer

Virtual destructors are necessary when you delete an object through a pointer to a base class. This ensures that the destructor of the derived class is called, properly releasing resources of the derived class before calling the base class destructor.

Virtual Destructors Must Be Used When