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Multiple ChoiceBeginner 45s

Rule of Three triggers

What does the Rule of Three state about a class that manages a raw owning pointer?
Options
  1. 1A class may declare at most three special member functions before the compiler deletes them.
  2. 2You must define move, copy, and destructor together, or the class itself is ill-formed here.
  3. 3At most three objects of the class may coexist before the program leaks the owned resource.
  4. 4If it needs a user-declared destructor, copy constructor, or copy assignment, it very likely needs all three.
cpprule-of-threeraii

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