C generic macro names - gcc -fextended-identifiers

Question

I am looking for how to write an identifier name with characters such as ['"or #.

Every time I try to do this, I give an error:

error: macro names must be identifiers

But learning about gcc, I found this option:

-fextended identifiers

But it doesn't seem to work like I wanted, please, does anyone know how to do this?

Answer 1

Identifiers cannot include such characters. Defined in this way in the language syntax, identifiers are letters, numbers, or underscores (and should not start with a number to avoid ambiguity with letter numbers).

, C ( [ ] C ( #). , ( , unicode- ..).

, " ", "C like". , . , ...

Answer 2

, -fextended-identifiers UTF-8 , .

, : .

Answer 3

, , :

[ ' " #

. " " " , ", , . _, (6.4.2.1 /).