9 ms·

Best to avoid macros if possible. use inline functions. Use global variables instead of MAX_BUF, etc

• _kst_ 11y ago
  The name of a variable, global or otherwise, is not a constant expression, so there are contexts in which it can't be used.
  • xiaq 11y ago
    Enums can be used for that purpose.
    • _kst_ 11y ago
      True, but only for type int. enum { MAX = 1000 };
      • J_Darnley 11y ago
        Why is this preferable over a preprocessor define? Is it because it can't be redefined easily? A max or count is certainly useful when there are other enum values but I don't see the huge advantage it has here.
        • _kst_ 11y ago
          Enumeration constants have scope.
• marvy 11y ago
  Not always possible though. For instance, I don't think it's possible to write "assert" as a function; it has to be a macro. But things like assert are admittedly pretty rare.