Validate an argument is ARRAY type in c/c++ pre processing macro on compile time [duplicate]

Answer 1

How to validate in c macro the argument is of ARRAY type

Use std::is_array inside of the macro. Or forget themacro and just use std::is_array.

Concerning ARRAY_SIZE,

constexpr size_t size(T const (&)[N])
{
  return N;
}