{CodeRoyale}
All challenges
Multiple ChoiceBeginner 45s

constexpr vs const

What is the key difference between `const` and `constexpr`?
Options
  1. 1`constexpr` requires compile-time evaluation where possible; `const` only means runtime-immutable after initialization.
  2. 2They are identical in every respect; constexpr is just a deprecated synonym for const.
  3. 3`const` guarantees compile-time evaluation of the initializer, while constexpr does not.
  4. 4A constexpr variable may be freely modified at runtime, unlike an ordinary const variable.
cppconstexprconst-correctness

Think you can answer under pressure?

Get matched and answer live questions in 3-minute 1v1 battles. Elo ranking, badge tiers and bragging rights on the line.

Play this in a 3-minute battle