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From: jrk@sys.uea.ac.uk (Richard Kennaway)
Newsgroups: comp.sys.mac.programmer
Subject: Re: stdin and stdout in MPW C 3.0
Keywords: stdin, stdout, MPW 3.0
Message-ID: <747@sys.uea.ac.uk>
Date: 12 Oct 89 15:18:02 GMT
References: <501@dftsrv.gsfc.nasa.gov> <16055@dartvax.Dartmouth.EDU>
Organization: UEA, Norwich, UK
Lines: 22

(Apologies if you see this twice, teething troubles with nn...)

In article <16055@dartvax.Dartmouth.EDU> earleh@eleazar.dartmouth.edu (Earle R. Horton) writes:
...
>formatted input and output.  You might think that you can use
>sprintf/sscanf to convert things into strings internally, thus
>bypassing stdio.  However, if you use sprintf or sscanf in your code,
>the linker pulls in all of stdio.  If you want to save space in your
>final application by not linking in stdio, then you cannot even use
>the standard string formatting routines.  Tough.

This isnt quite true.  To use sprintf/sscanf without pulling in all of
stdio, all you need to do is define empty routines of your own called
fwrite(), _flsbuf(), and _filbuf(), and make sure those get linked
before stdio.  I got this technique from the net a long time ago (I forget
who posted it), and have used it ever since with MPW 2 and 3.  I find
it saves about 10K of dead code.

Just make sure you dont leave the first character off "sscanf" :-).
--
Richard Kennaway          SYS, University of East Anglia, Norwich, U.K.
Janet:  kennaway@sys.uea.ac.uk		uucp:  ...mcvax!ukc!uea-sys!jrk