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From: wayne@ames.arpa
Newsgroups: comp.lang.c
Subject: Second question on #define
Message-ID: <10104@brl-adm.ARPA>
Date: Mon, 2-Nov-87 12:04:14 EST
Article-I.D.: brl-adm.10104
Posted: Mon Nov  2 12:04:14 1987
Date-Received: Sat, 7-Nov-87 07:20:29 EST
Sender: news@brl-adm.ARPA
Lines: 22

Having gotten tremendous response to my last question about #define, I
now have another one.  I have a large number of manifest constants of
the form
                    GREATBIGLONGPREFIX_SHORTTHING

I would like to have a macro accept only SHORTTHING as an argument but
use the full constant name in the generated code.  I (naively) tried

        #define   WIDGET(x)   printf("%d\n", GREATBIGLONGPREFIX_x)

but of course this didn't work (didn't substitute x).  I guess this is
related to a discussion I saw a while back on getting xy out of two
separate parameters x and y (that is, concatenation), but I don't
remember the results of that discussion well enough to apply it here.

Any assistance would as always be muchly appreciated ...   Thnx.

      Wayne Hathaway                  ultra!wayne@Ames.ARPA
      Ultra Network Technologies
      2140 Bering drive               with a domain server:
      San Jose, CA 95131                 wayne@Ultra.COM
      408-922-0100