How can I generate unique values in the C preprocessor?

Question

I\'m writing a bunch of related preprocessor macros, one of which generates labels which the other one jumps to. I use them in this fashion:

MAKE_FUNNY_JUMPI         


        

Answer 1

I can't think of a way to automatically generate them but you could pass a parameter to MAKE_LABEL:

#define MAKE_LABEL(n) my_cool_label_##n:

Then...

MAKE_FUNNY_JUMPING_LOOP(
  MAKE_LABEL(0);
  MAKE_LABEL(1);
)