Date: Thu, 29 Jul 1999 11:30:29 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender: eliz AT is
To: nine1one AT juno DOT com
cc: djgpp AT delorie DOT com
Subject: Re: Problems with file I/O and the value 13 (EOF?)
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On Wed, 28 Jul 1999 nine1one AT juno DOT com wrote:

>   I am having problems with reading and writing to disk files with the
> standard C I/O libraries. I am writing a program that needs to read and
> write values from disk. I have a record of strings and short integers.
> Whenever I write the value 13 to a file and read it back I get a large
> number, as if it shifted bytes and is reading a value in the upper byte
> of the short integer.
[snip]
> /* create the file of 15 records */
> fptr=fopen("junk","w");

Here's your problem: you read and write binary data, but you didn't
use the "wb" and "rb" modes to open the file in binary mode.  So 13
(an ASCII code for a Newline) gets converted to the CR-LF pair and
corrupts your data file.  See section 9.3 of the DJGPP FAQ list, for
more on this.