And they say C is obscure

Newsgroups	comp.lang.c
Subject	And they say C is obscure
From	Peabody <waybackNO584SPAM44@yahoo.com>
Date	2017-04-08 22:59 -0500
Message-ID	<20170409-035940.754.0@Peabody.ssl.astraweb.com> (permalink)
Organization	Unlimited download news at news.astraweb.com

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Sorry, but I just can't find it.

Could someone please explain this:

for(linepos= 0;
linepos < linelen-3; linepos+= 3, dataframelen++)

So this is parsing a TI-TXT file, which looks like this:

@FFE0
FF FF FF FF 14 FC FF FF FF FF 5E FD FF FF FF FF
0E FD E6 F9 28 FD FF FF FF FF FF FF FF FF C2 FC
q

into binary values.  So the 3's make sense.

I understand it up until the ", dataframelen++" which seems to have nothing 
to do with the FOR loop.  It's like "increment linepos by 3, and while you're 
at it, go ahead and increment dataframelen too."  Am I reading that right?  
is that structure allowed in C?  Well, obviously it is, but how does anyone 
ever get up to speed in this language.  More important, how does anyone check 
for errors trying to read stuff like this?

And while I'm at it, let me ask how you would create an unsigned byte array 
exactly 2048 bytes long, and fill it with FFs.

I guess I need to go to school for this, or give it up and go back to 
assembler.  It's just really hard trying to understand someone else's code.

Thanks for any help.

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And they say C is obscure Peabody <waybackNO584SPAM44@yahoo.com> - 2017-04-08 22:59 -0500
  Re: And they say C is obscure Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2017-04-08 22:17 -0600
    Re: And they say C is obscure Peabody <waybackNO584SPAM44@yahoo.com> - 2017-04-09 07:42 -0500
      Re: And they say C is obscure Barry Schwarz <schwarzb@dqel.com> - 2017-04-09 07:46 -0700
      Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-04-09 16:47 +0200
      Re: And they say C is obscure James Kuyper <jameskuyper@verizon.net> - 2017-04-09 14:42 -0400
        Re: And they say C is obscure Keith Thompson <kst-u@mib.org> - 2017-04-09 13:25 -0700
          Re: And they say C is obscure James Kuyper <jameskuyper@verizon.net> - 2017-04-09 22:56 -0400
      Re: And they say C is obscure Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2017-04-09 15:18 -0600
      Re: And they say C is obscure Ken Brody <kenbrody@spamcop.net> - 2017-04-10 12:57 -0400
    Re: And they say C is obscure scott@slp53.sl.home (Scott Lurndal) - 2017-04-10 14:46 +0000
  Re: And they say C is obscure luser droog <luser.droog@gmail.com> - 2017-04-09 07:26 -0700
  Re: And they say C is obscure James Kuyper <jameskuyper@verizon.net> - 2017-04-09 14:18 -0400
    Re: And they say C is obscure Gareth Owen <gwowen@gmail.com> - 2017-04-09 20:53 +0100
    Re: And they say C is obscure Keith Thompson <kst-u@mib.org> - 2017-04-09 13:52 -0700
      Re: And they say C is obscure raltbos@xs4all.nl (Richard Bos) - 2017-04-14 11:48 +0000
        Re: And they say C is obscure Ken Brody <kenbrody@spamcop.net> - 2017-04-14 13:36 -0400
          Re: And they say C is obscure raltbos@xs4all.nl (Richard Bos) - 2017-04-20 13:24 +0000
            Re: And they say C is obscure supercat@casperkitty.com - 2017-04-20 08:05 -0700
              Re: And they say C is obscure scott@slp53.sl.home (Scott Lurndal) - 2017-04-20 15:32 +0000
                Re: And they say C is obscure supercat@casperkitty.com - 2017-04-20 09:48 -0700
                Re: And they say C is obscure scott@slp53.sl.home (Scott Lurndal) - 2017-04-20 18:00 +0000
                Re: And they say C is obscure supercat@casperkitty.com - 2017-04-20 11:34 -0700
                Re: And they say C is obscure scott@slp53.sl.home (Scott Lurndal) - 2017-04-20 18:41 +0000
  Re: And they say C is obscure Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-04-09 13:18 -0700
    Re: And they say C is obscure Keith Thompson <kst-u@mib.org> - 2017-04-09 14:03 -0700
      Re: And they say C is obscure bartc <bc@freeuk.com> - 2017-04-09 22:56 +0100
        Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-04-10 09:12 +0200
        Re: And they say C is obscure Keith Thompson <kst-u@mib.org> - 2017-04-10 08:22 -0700
          Re: And they say C is obscure bartc <bc@freeuk.com> - 2017-04-10 18:28 +0100
            Re: And they say C is obscure scott@slp53.sl.home (Scott Lurndal) - 2017-04-10 17:49 +0000
            Re: And they say C is obscure Keith Thompson <kst-u@mib.org> - 2017-04-10 11:50 -0700
              Re: And they say C is obscure bartc <bc@freeuk.com> - 2017-04-10 20:33 +0100
                Re: And they say C is obscure Keith Thompson <kst-u@mib.org> - 2017-04-10 13:06 -0700
                Re: And they say C is obscure Gareth Owen <gwowen@gmail.com> - 2017-04-10 21:48 +0100
                Re: And they say C is obscure bartc <bc@freeuk.com> - 2017-04-10 22:15 +0100
                Re: And they say C is obscure Michael Barry <barrym95838@yahoo.com> - 2017-04-10 18:46 -0700
                Re: And they say C is obscure scott@slp53.sl.home (Scott Lurndal) - 2017-04-10 21:46 +0000
                Re: And they say C is obscure bartc <bc@freeuk.com> - 2017-04-10 23:09 +0100
                Re: And they say C is obscure scott@slp53.sl.home (Scott Lurndal) - 2017-04-11 12:40 +0000
                Re: And they say C is obscure bartc <bc@freeuk.com> - 2017-04-11 14:15 +0100
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-04-26 10:13 -0700
                Re: And they say C is obscure supercat@casperkitty.com - 2017-04-26 10:38 -0700
                Re: And they say C is obscure supercat@casperkitty.com - 2017-04-10 15:23 -0700
                Re: And they say C is obscure raltbos@xs4all.nl (Richard Bos) - 2017-04-14 11:51 +0000
                Re: And they say C is obscure bartc <bc@freeuk.com> - 2017-04-14 13:14 +0100
                Re: And they say C is obscure supercat@casperkitty.com - 2017-04-14 10:42 -0700
                Re: And they say C is obscure bartc <bc@freeuk.com> - 2017-04-14 19:04 +0100
                Re: And they say C is obscure Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-04-14 21:43 +0100
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-04-26 11:02 -0700
                Re: And they say C is obscure Gareth Owen <gwowen@gmail.com> - 2017-04-26 19:05 +0100
                Re: And they say C is obscure Keith Thompson <kst-u@mib.org> - 2017-04-26 12:02 -0700
                Re: And they say C is obscure Gareth Owen <gwowen@gmail.com> - 2017-04-26 21:55 +0100
                Re: And they say C is obscure bartc <bc@freeuk.com> - 2017-04-27 00:15 +0100
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-04-27 13:23 -0700
                Re: And they say C is obscure Gareth Owen <gwowen@gmail.com> - 2017-04-14 18:12 +0100
                Re: And they say C is obscure bartc <bc@freeuk.com> - 2017-04-14 18:37 +0100
                Re: And they say C is obscure GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-04-11 00:03 +0200
              Re: And they say C is obscure Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-04-10 14:10 -0700
                Re: And they say C is obscure mark.bluemel@gmail.com - 2017-04-11 08:41 -0700
                Re: And they say C is obscure supercat@casperkitty.com - 2017-04-11 08:58 -0700
                Re: And they say C is obscure Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-04-11 09:06 -0700
                Re: And they say C is obscure scott@slp53.sl.home (Scott Lurndal) - 2017-04-11 16:46 +0000
                Re: And they say C is obscure Gareth Owen <gwowen@gmail.com> - 2017-04-11 19:02 +0100
                Re: And they say C is obscure raltbos@xs4all.nl (Richard Bos) - 2017-04-14 11:59 +0000
            Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-04-26 10:59 -0700
              Re: And they say C is obscure bartc <bc@freeuk.com> - 2017-04-27 21:40 +0100
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-02 05:17 -0700
                Re: And they say C is obscure David Kleinecke <dkleinecke@gmail.com> - 2017-05-03 12:50 -0700
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-05 01:20 -0700
                Re: And they say C is obscure David Kleinecke <dkleinecke@gmail.com> - 2017-05-05 12:37 -0700
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-06 00:16 -0700
                Re: And they say C is obscure David Kleinecke <dkleinecke@gmail.com> - 2017-05-06 11:49 -0700
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-06 13:16 -0700
                Re: And they say C is obscure David Kleinecke <dkleinecke@gmail.com> - 2017-05-06 14:10 -0700
                Re: And they say C is obscure Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2017-05-06 20:23 -0600
                Re: And they say C is obscure David Kleinecke <dkleinecke@gmail.com> - 2017-05-06 21:51 -0700
                Re: And they say C is obscure fir <profesor.fir@gmail.com> - 2017-05-07 05:04 -0700
                Re: And they say C is obscure fir <profesor.fir@gmail.com> - 2017-05-07 05:09 -0700
                Re: And they say C is obscure fir <profesor.fir@gmail.com> - 2017-05-07 05:18 -0700
                Re: And they say C is obscure fir <profesor.fir@gmail.com> - 2017-05-07 05:54 -0700
                Re: And they say C is obscure bartc <bc@freeuk.com> - 2017-05-07 13:48 +0100
                Re: And they say C is obscure fir <profesor.fir@gmail.com> - 2017-05-07 06:13 -0700
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-07 15:10 +0200
                Re: And they say C is obscure Manfred <noname@invalid.add> - 2017-05-07 16:47 +0200
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-07 21:08 +0200
                Re: And they say C is obscure bartc <bc@freeuk.com> - 2017-05-07 21:54 +0100
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-08 00:59 +0200
                Re: And they say C is obscure David Kleinecke <dkleinecke@gmail.com> - 2017-05-07 16:59 -0700
                Re: And they say C is obscure Robert Wessel <robertwessel2@yahoo.com> - 2017-05-07 22:28 -0500
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-08 10:16 +0200
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-08 02:41 -0700
                Re: And they say C is obscure fir <profesor.fir@gmail.com> - 2017-05-08 07:36 -0700
                Re: And they say C is obscure raltbos@xs4all.nl (Richard Bos) - 2017-05-09 10:06 +0000
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-09 14:03 +0200
                Re: And they say C is obscure Manfred <noname@invalid.add> - 2017-05-09 19:41 +0200
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-09 21:35 +0200
                Re: And they say C is obscure raltbos@xs4all.nl (Richard Bos) - 2017-05-09 20:25 +0000
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-10 14:48 +0200
                Re: And they say C is obscure Richard Heathfield <rjh@cpax.org.uk> - 2017-05-10 14:23 +0100
                Re: And they say C is obscure Manfred <noname@invalid.add> - 2017-05-10 21:31 +0200
                Re: And they say C is obscure Keith Thompson <kst-u@mib.org> - 2017-05-10 12:45 -0700
                Re: And they say C is obscure "James R. Kuyper" <jameskuyper@verizon.net> - 2017-05-10 16:49 -0400
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-07 08:56 -0700
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-08 09:54 -0700
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-08 17:32 -0700
                Re: And they say C is obscure Keith Thompson <kst-u@mib.org> - 2017-05-08 18:26 -0700
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-09 02:28 -0700
                Re: And they say C is obscure raltbos@xs4all.nl (Richard Bos) - 2017-05-09 10:15 +0000
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-09 05:53 -0700
                Re: And they say C is obscure bartc <bc@freeuk.com> - 2017-05-09 14:15 +0100
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-09 06:55 -0700
                Re: And they say C is obscure Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-05-09 14:43 +0100
                Re: And they say C is obscure Richard Heathfield <rjh@cpax.org.uk> - 2017-05-09 23:07 +0100
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-10 15:32 +0200
                Re: And they say C is obscure raltbos@xs4all.nl (Richard Bos) - 2017-05-10 11:39 +0000
                Re: And they say C is obscure mark.bluemel@gmail.com - 2017-05-09 06:21 -0700
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-11 03:00 -0700
                Re: And they say C is obscure Gareth Owen <gwowen@gmail.com> - 2017-05-09 18:20 +0100
                Re: And they say C is obscure Keith Thompson <kst-u@mib.org> - 2017-05-10 10:06 -0700
                Re: And they say C is obscure fir <profesor.fir@gmail.com> - 2017-05-10 11:11 -0700
                Re: And they say C is obscure Richard Heathfield <rjh@cpax.org.uk> - 2017-05-10 12:45 +0100
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-10 05:33 -0700
                Re: And they say C is obscure Richard Heathfield <rjh@cpax.org.uk> - 2017-05-10 13:41 +0100
                Re: And they say C is obscure Jerry Stuckle <jstucklex@attglobal.net> - 2017-05-10 09:32 -0400
                Re: And they say C is obscure Richard Heathfield <rjh@cpax.org.uk> - 2017-05-10 14:51 +0100
                Re: And they say C is obscure Jerry Stuckle <jstucklex@attglobal.net> - 2017-05-10 10:54 -0400
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-10 17:36 +0200
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-10 09:28 -0700
                Re: And they say C is obscure Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-05-10 19:12 +0100
                Re: And they say C is obscure me <crisdunbar@gmail.com> - 2017-05-10 11:53 -0700
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-10 22:19 +0200
                Re: And they say C is obscure Gareth Owen <gwowen@gmail.com> - 2017-05-11 07:36 +0100
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-11 00:39 -0700
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-11 13:30 +0200
                Re: And they say C is obscure Richard Heathfield <rjh@cpax.org.uk> - 2017-05-11 13:17 +0100
                Re: And they say C is obscure Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-05-11 13:37 +0100
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-12 10:39 +0200
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-13 09:34 -0700
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-13 09:48 -0700
                Re: And they say C is obscure Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-05-13 19:48 +0100
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-13 14:01 -0700
                Re: And they say C is obscure David Kleinecke <dkleinecke@gmail.com> - 2017-05-13 15:23 -0700
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-14 03:14 -0700
                [OT] Re: And they say C is obscure Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-05-14 12:18 +0100
                Re: [OT] Re: And they say C is obscure Richard Heathfield <rjh@cpax.org.uk> - 2017-05-14 13:28 +0100
                Re: [OT] Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-14 15:56 +0200
                Re: [OT] Re: And they say C is obscure Richard Heathfield <rjh@cpax.org.uk> - 2017-05-14 16:56 +0100
                Re: And they say C is obscure Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-05-14 02:03 +0100
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-14 03:08 -0700
                Re: And they say C is obscure Richard Heathfield <rjh@cpax.org.uk> - 2017-05-14 13:44 +0100
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-14 16:13 +0200
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-14 08:04 -0700
                Re: And they say C is obscure luser droog <luser.droog@gmail.com> - 2017-05-14 08:52 -0700
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-14 09:16 -0700
                Re: And they say C is obscure Richard Heathfield <rjh@cpax.org.uk> - 2017-05-14 17:48 +0100
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-14 14:11 -0700
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-14 22:57 +0200
                Re: And they say C is obscure Keith Thompson <kst-u@mib.org> - 2017-05-14 14:10 -0700
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-14 15:51 +0200
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-14 14:04 -0700
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-11 07:45 -0700
                Re: And they say C is obscure Richard Heathfield <rjh@cpax.org.uk> - 2017-05-11 16:45 +0100
                Re: And they say C is obscure Gareth Owen <gwowen@gmail.com> - 2017-05-11 19:58 +0100
                Re: And they say C is obscure Ike Naar <ike@iceland.freeshell.org> - 2017-05-11 22:15 +0000
                Re: And they say C is obscure Richard Heathfield <rjh@cpax.org.uk> - 2017-05-11 23:24 +0100
                Re: And they say C is obscure David Brown <david.brown@hesbynett.no> - 2017-05-12 10:50 +0200
                Re: And they say C is obscure Richard Heathfield <rjh@cpax.org.uk> - 2017-05-12 09:57 +0100
                Re: And they say C is obscure Jerry Stuckle <jstucklex@attglobal.net> - 2017-05-10 16:31 -0400
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-10 07:50 -0700
                Re: And they say C is obscure supercat@casperkitty.com - 2017-05-10 09:00 -0700
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-11 03:03 -0700
                Re: And they say C is obscure Keith Thompson <kst-u@mib.org> - 2017-05-11 09:02 -0700
                Re: And they say C is obscure Manfred <noname@invalid.add> - 2017-05-12 18:34 +0200
                Re: And they say C is obscure Richard Heathfield <rjh@cpax.org.uk> - 2017-05-12 18:47 +0100
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-13 09:03 -0700
                Re: And they say C is obscure raltbos@xs4all.nl (Richard Bos) - 2017-05-09 10:11 +0000
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-09 08:28 -0700
                Re: And they say C is obscure Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-05-09 09:40 -0700
                Re: And they say C is obscure raltbos@xs4all.nl (Richard Bos) - 2017-05-09 20:26 +0000
                Re: And they say C is obscure fir <profesor.fir@gmail.com> - 2017-05-10 00:20 -0700
                Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-05-08 09:01 -0700
        Re: And they say C is obscure John Bode <jfbode1029@gmail.com> - 2017-04-11 09:15 -0700
          Re: And they say C is obscure supercat@casperkitty.com - 2017-04-11 09:29 -0700
    Re: And they say C is obscure Manfred <noname@invalid.add> - 2017-04-13 16:00 +0200
      Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-04-16 19:45 -0700
    Re: And they say C is obscure Tim Rentsch <txr@alumni.caltech.edu> - 2017-04-26 11:09 -0700

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