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An inline function is preferred to a function-like macro because it

  • A.can be used before it is declared
  • B.is guaranteed by the standard to be expanded in place
  • C.is type checked and evaluates its arguments once
  • D.always produces smaller code than the macro would

Answer: C

Correct answer: is type checked and evaluates its arguments once

Those two properties are what a macro lacks: the compiler checks the argument types against the parameters, and each argument is evaluated exactly once whatever the body does with it. inline is a request rather than a guarantee, and the resulting code is not necessarily smaller.

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