From:	mdruiter AT cs DOT vu DOT nl (Ruiter de M)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: sprintf() string length?
Date:	16 Oct 1997 14:01:16 GMT
Organization:	Fac. Wiskunde & Informatica, VU, Amsterdam
Lines:	26
Message-ID:	<6256nc$jtt$1@star.cs.vu.nl>
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NNTP-Posting-Host:	sloep53.cs.vu.nl
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Jonathan Foster (jgf1 AT ukc DOT ac DOT uk) wrote:
: Peter Palotas wrote:
: > Is there a way to find out the length of the string that sprintf() will
: > generate, without writing it anywhere?

: The "fprintf" command will return the number of characters output,

I thought it returns the number of correctly parsed arguments after
the format string. But my Solaris man pages say you are right.

: and you should fopen DOS's "NULL" file to send the output to.

You mean NUL. Not very portable solution.

: "NULL" is a "black hole" which will swallow and ignore anything you
: send to it.  Although "NULL" never appears in a directory, it
: exists everywhere.  (I think the UNIX equivalent is "/dev/nul",
: but I've never used UNIX.)

That's "/dev/null" or "/dev/zero". Works for DJGPP too, automagicly :)

-- 
Groeten, Michel.        http://www.cs.vu.nl/~mdruiter
 \----/==\----/
  \  /    \  /          "You know, Beavis, you need things that suck,
   \/      \/           to have things that are cool", Butt-Head.

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