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Groups > comp.lang.c > #28183

Re: Strange Behaviour in finding Size of a File

From Ike Naar <ike@sverige.freeshell.org>
Newsgroups comp.lang.c
Subject Re: Strange Behaviour in finding Size of a File
Date 2012-11-10 17:42 +0000
Organization A noiseless patient Spider
Message-ID <slrn3vfsk9t4g4.qd0.ike@sverige.freeshell.org> (permalink)
References (3 earlier) <87pq3m8snq.fsf@dpt-info.u-strasbg.fr> <lny5iajz3p.fsf@nuthaus.mib.org> <k7kgrh$81u$1@dont-email.me> <lnd2zmjg24.fsf@nuthaus.mib.org> <k7ll1v$jbb$1@dont-email.me>

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On 2012-11-10, Eric Sosman <esosman@comcast-dot-net.invalid> wrote:
> On 11/9/2012 10:24 PM, Keith Thompson wrote:
>>[...]
>> (As I said earlier, C doesn't guarantee that the value returned by
>> ftell() is meaningful for text streams, but that's unlikely to be
>> an issue for the OP.)
>
>      If the all the logging happens in one place (or a small
> number of nearby places), and if it all happens during one
> execution of the program, the O.P. can do the entire job in
> purely portable C.  Something like
>
> 	static FILE *logStream;
> 	static size_t logLength;
>
> 	void writeLog(const char *format, ...) {
> 	    if (logStream == NULL) {
> 	        logStream = openLog(...);
> 	        logLength = 0;
> 	    }
>
> 	    va_list ap;
> 	    va_start(ap, format);
> 	    logLength += vfprintf(format, ap);

You mean
  	    logLength += vfprintf(logStream, format, ap);
?

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Thread

Strange Behaviour in finding Size of a File felix <ckpradip@gmail.com> - 2012-11-08 23:09 -0800
  Re: Strange Behaviour in finding Size of a File "Where's all the China Blue food?" <chine.bleu@yahoo.com> - 2012-11-08 23:26 -0800
  Re: Strange Behaviour in finding Size of a File James Kuyper <jameskuyper@verizon.net> - 2012-11-09 06:56 -0500
    Re: Strange Behaviour in finding Size of a File felix <ckpradip@gmail.com> - 2012-11-12 22:23 -0800
      Re: Strange Behaviour in finding Size of a File James Kuyper <jameskuyper@verizon.net> - 2012-11-13 07:27 -0500
        Re: Strange Behaviour in finding Size of a File felix <ckpradip@gmail.com> - 2012-11-19 01:52 -0800
          Re: Strange Behaviour in finding Size of a File James Kuyper <jameskuyper@verizon.net> - 2012-11-19 08:09 -0500
  Re: Strange Behaviour in finding Size of a File Eric Sosman <esosman@comcast-dot-net.invalid> - 2012-11-09 08:24 -0500
    Re: Strange Behaviour in finding Size of a File Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-11-10 06:06 -0800
      Re: Strange Behaviour in finding Size of a File Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-11-10 15:12 +0000
        Re: Strange Behaviour in finding Size of a File Ian Collins <ian-news@hotmail.com> - 2012-11-11 08:40 +1300
          Re: Strange Behaviour in finding Size of a File Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-11-10 20:36 +0000
      Re: Strange Behaviour in finding Size of a File Eric Sosman <esosman@comcast-dot-net.invalid> - 2012-11-10 10:13 -0500
  Re: Strange Behaviour in finding Size of a File John Gordon <gordon@panix.com> - 2012-11-09 15:16 +0000
    Re: Strange Behaviour in finding Size of a File Mark Bluemel <mark_bluemel@pobox.com> - 2012-11-09 15:56 +0000
    Re: Strange Behaviour in finding Size of a File James Kuyper <jameskuyper@verizon.net> - 2012-11-09 11:01 -0500
  Re: Strange Behaviour in finding Size of a File Greg Martin <greg@softsprocket.com> - 2012-11-09 08:59 -0800
  Re: Strange Behaviour in finding Size of a File Alain Ketterlin <alain@dpt-info.u-strasbg.fr> - 2012-11-09 19:42 +0100
    Re: Strange Behaviour in finding Size of a File Keith Thompson <kst-u@mib.org> - 2012-11-09 11:29 -0800
      Re: Strange Behaviour in finding Size of a File Alain Ketterlin <alain@dpt-info.u-strasbg.fr> - 2012-11-09 20:47 +0100
        Re: Strange Behaviour in finding Size of a File Keith Thompson <kst-u@mib.org> - 2012-11-09 12:33 -0800
          Re: Strange Behaviour in finding Size of a File Alain Ketterlin <alain@dpt-info.u-strasbg.fr> - 2012-11-10 02:08 +0100
            Re: Strange Behaviour in finding Size of a File Philip Lantz <prl@canterey.us> - 2012-11-09 18:33 -0800
              Re: Strange Behaviour in finding Size of a File gazelle@shell.xmission.com (Kenny McCormack) - 2012-11-10 02:58 +0000
                Re: Strange Behaviour in finding Size of a File Philip Lantz <prl@canterey.us> - 2012-11-09 23:29 -0800
                Re: Strange Behaviour in finding Size of a File Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-11-10 06:09 -0800
            Re: Strange Behaviour in finding Size of a File Ian Collins <ian-news@hotmail.com> - 2012-11-10 17:46 +1300
              Re: Strange Behaviour in finding Size of a File James Kuyper <jameskuyper@verizon.net> - 2012-11-10 22:20 -0500
              Re: Strange Behaviour in finding Size of a File Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2012-11-12 14:01 +0200
            Re: Strange Behaviour in finding Size of a File gazelle@shell.xmission.com (Kenny McCormack) - 2012-11-10 22:01 +0000
          Re: Strange Behaviour in finding Size of a File James Kuyper <jameskuyper@verizon.net> - 2012-11-09 22:14 -0500
            Re: Strange Behaviour in finding Size of a File Keith Thompson <kst-u@mib.org> - 2012-11-09 19:24 -0800
              Re: Strange Behaviour in finding Size of a File James Kuyper <jameskuyper@verizon.net> - 2012-11-09 23:30 -0500
              Re: Strange Behaviour in finding Size of a File Eric Sosman <esosman@comcast-dot-net.invalid> - 2012-11-10 08:32 -0500
                Re: Strange Behaviour in finding Size of a File Ike Naar <ike@sverige.freeshell.org> - 2012-11-10 17:42 +0000
                Re: Strange Behaviour in finding Size of a File Eric Sosman <esosman@comcast-dot-net.invalid> - 2012-11-10 15:19 -0500
  Re: Strange Behaviour in finding Size of a File Keith Thompson <kst-u@mib.org> - 2012-11-09 11:34 -0800

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