From:	Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: How to write #define with several args
Date:	5 Apr 2000 15:43:29 GMT
Organization:	Aachen University of Technology (RWTH)
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Michael N. Filippov <michael AT idisys DOT iae DOT nsk DOT su> wrote:

> Does anybody know how could i write #define to use it with
> not predefined number of args. Example:

In standard C, as defined in 1989, you can't. The new standard revision,
and GCC as an existing extension, support it, but for those, you've
got the syntax wrong.

> #include <stdio.h>

> #define P(format, s) printf(format, s) // this is for one argument
> #define MP(format, ...) printf(format, ...) // error 

Make that line

  #define MP(format, ...) printf(format, __VA_ARGS__) 

and it may work. Or look up the correct syntax in the GNU cpp manual
('info cpp').
-- 
Hans-Bernhard Broeker (broeker AT physik DOT rwth-aachen DOT de)
Even if all the snow were burnt, ashes would remain.

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