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From: preston@felix.UUCP (Preston Bannister)
Newsgroups: comp.sys.atari.st
Subject: Re: FILE I/O
Message-ID: <12361@felix.UUCP>
Date: Wed, 11-Nov-87 10:45:13 EST
Article-I.D.: felix.12361
Posted: Wed Nov 11 10:45:13 1987
Date-Received: Sat, 14-Nov-87 18:48:02 EST
References: <2023@homxc.UUCP> <183@decvax.UUCP>
Sender: daemon@felix.UUCP
Reply-To: preston@felix.UUCP (Preston Bannister)
Organization: FileNet Corp., Costa Mesa, CA
Lines: 34
Keywords: Mark Williams C, Fseek, fseek

In article <183@decvax.UUCP> minow@decvax.UUCP (Martin Minow) writes:
>In article <2023@homxc.UUCP> jdn@homxc.UUCP (J.NAGY) asks about the
>difference between Fseek and fseek (etc.), noting that they look
>quite similar.
>
>The Upper-case functions ...  are *much* harder to use.
[ text of example deleted ]

There is a much simpler way to find the length of a file.  You simply
do an Fseek to the end of the file.  This means of getting the length
of a file is also usable with Unix and MSDOS (if not always necessary).
(I'm doing this from memory):

void
Example (filename)
  char *filename;
{
  int f, length;
  f = Fopen(name,0);
  if (f > 0)
  {
    length = Fseek(f,0,2);	/* seek to end of file */
    Fseek(f,0,0);		/* seek back to beginning of file */
    /* we now know the size of the file */
    ProcessFile(f,length);	/* for instance */
    Fclose(f);
  }
}
--
Preston L. Bannister
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