Sender:	nate AT cartsys DOT com
Message-ID:	<3564FFB4.A9F56566@cartsys.com>
Date:	Thu, 21 May 1998 21:31:48 -0700
From:	Nate Eldredge <nate AT cartsys DOT com>
MIME-Version:	1.0
To:	JCx <jicehix AT worldnet DOT fr>
CC:	djgpp AT delorie DOT com
Subject:	Re: Problem writing in a file...
References:	<6jv6lo$73e$1 AT news3 DOT isdnet DOT net>

JCx wrote:
> 
>    Hi there !
> 
> I just spent two hours trying to code -without success- the following thing:
> I open a text file, then look for a specific string in this file (with
> fgets) and then, when I find this string, my program is supposed to add
> another string just after the one it found (with fprintf). The problem is:
> the program duplicates everything that stands after the line found, and then
> adds the line I looked for+the line I wanted to add at the end of the file !
> 
>    To say it clearly:
> 
> It opens system.ini : working
> It looks for [drivers32] : working
> I *should* write a string just after this line : bug
> 
>    Could anyone help me ?
>    Source included.
> 
>    Thanks, JCx.
>    jicehix AT worldnet DOT fr
> 
>                 Name: addv.c
>    addv.c       Type: unspecified type (application/octet-stream)
>             Encoding: x-uuencode

First of all, know that what you are trying to do will *overwrite*
whatever follows "[drivers32]". What you probably need to do is read the
file and write to a temp file with the line *added*, then copy it back
over the original.

Also, I believe that a file opened in "+" mode needs to be `fflush'ed
before writing after reading, and vice versa.

-- 

Nate Eldredge
nate AT cartsys DOT com

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