preprocessor token pasting

[Ramey]

I've written

#define CODE(n, c, m, d, u) INDEX_CODE_ ## n,

which intended to expand the following

CODE(NULL, 0, 0, 0, 0)

to:

INDEX_CODE_NULL

but fails to do so. It seems that the ANSI C pre-processor operator ## doesn't work. Does anyone know anything about this. Is there some sort of way to get the same effect?

Robert Ramey

[Ttelmah]

There must not be a space between the '##', and the 'n', to get the 'one piece' result required in CCS.
Also, you may have a problem, if you have stddef.h loaded (which is automatically loaded by several of the other include files), since CCS, does not have/support a 'NULL' data type, and therefore has it defined in this file as '0'. So your line expands as:
INDEX_CODE_0

If this is already included...

Best Wishes