What is the main purpose of a virtual destructor in C++?
Options
- A. To prevent creation of objects
- B. To ensure proper destruction through a base-class pointer
- C. To make constructors execute twice
- D. More than one of the above
- E. None of the above
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Quiz Practice:
Correct Answer (Detailed Explanation is Below)
B. To ensure proper destruction through a base-class pointer
Detailed Explanation
Answer: To ensure proper destruction through a base-class pointer
A virtual destructor is important when a derived object may be deleted through a pointer to its base class.
If the base destructor is virtual, destruction occurs correctly through the inheritance hierarchy, allowing the derived-class destructor to execute before the base-class destructor.