Which C++ smart pointer allows multiple smart pointers to share ownership of the same object?
Options
- A. unique_ptr
- B. shared_ptr
- C. auto_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)
B. shared_ptr
Detailed Explanation
Answer: shared_ptr
std::shared_ptr allows multiple smart pointers to share ownership of the same dynamically allocated object.
It uses reference counting. When the last owning shared_ptr is destroyed or released, the managed object is automatically destroyed.
This is useful when an object needs to be owned by multiple parts of a program.