Which smart pointer is designed for non-owning observation of an object managed by shared_ptr?
Options
- A. unique_ptr
- B. shared_ptr
- C. weak_ptr
- D. More than one of the above
- E. None of the above
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Quiz Practice:
Correct Answer (Detailed Explanation is Below)
C. weak_ptr
Detailed Explanation
Answer: weak_ptr
std::weak_ptr provides a non-owning reference to an object managed by std::shared_ptr.
Unlike shared_ptr, a weak_ptr does not increase the strong reference count.
It is especially useful for avoiding ownership cycles between objects managed by shared_ptr.