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Multiple ChoiceIntermediate 45s

consteval vs constexpr

What does `consteval` (C++20) enforce that `constexpr` does not?
Options
  1. 1The function cannot be called at compile time, and is only usable during runtime execution.
  2. 2The function must be evaluated at compile time; calling it at runtime is ill-formed.
  3. 3It is only allowed on variables and never on functions, which constexpr permits both of.
  4. 4It is exactly equivalent to constexpr, with the newer spelling simply preferred in C++20.
cppconstevalconstexprc++20

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