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Date:	Thu, 10 Feb 2000 12:02:04 PST
From:	"Steven Levine" <steve53@earthlink.net >
Reply-To:	scoug-programming@scoug.com
To:	scoug-programming@scoug.com
Subject:	SCOUG-Programming: Preprocessor syntax

In <38A304B3.F95A3FAB@sundialsystems.com>, on 02/10/00
at 10:35 AM, Rollin White said:

>For example, if I wanted to replace abc with the # character, or def with
>the colon character. Any of the obvious syntaxes I try generate errors:

>#define abc #
>#define abc \#
>#define abc ##
>#define def :
>#define def \:
>#define def #:

You can only do this with strings:

#define abc "#"

Then you need to use the stringizing and tokenizing forms (i.e. ##) of
replacement to get them into place. Note that there are limits with what
you can accomplish even with this. Often you need to define an inner
macro to build up the strings.

Steven

--
----------------------------------------------------------------
"Steven Levine" MR2/ICE 2.06 #10183 Warp4/FP11
----------------------------------------------------------------

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