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From: donm@margot.Eng.Sun.COM (Don Miller)
Newsgroups: comp.lang.c
Subject: Re: FILE *fp[]; /* is this possible? */
Summary: mode problem
Keywords: fopen mode
Message-ID: <3651@exodus.Eng.Sun.COM>
Date: 29 Nov 90 00:06:18 GMT
References: <1990Nov27.131327.21662@agate.berkeley.edu>
Sender: news@exodus.Eng.Sun.COM
Organization: Sun Microsystems, Mt. View, Ca.
Lines: 22

In article <1990Nov27.131327.21662@agate.berkeley.edu> labb-4ac@e260-2a.berkeley.edu (superMan (the web dweller)) writes:
>I have the following
>
>FILE *fp[256];
>
>for(i=0;i!=256;i++) fp[i]=fopen(file_name[i],"r+");
>
>but when I look at the value of fp[i] I get (nil)

   Interesting threads regarding maximum open files notwithstanding,
   it seems that a simple answer to the original question posed is
   the mode is wrong.  If the files to be opened do not exist prior
   to the fopen call, using fopen with "r+" will return 0 (nil, NULL).
   Try "w+" to open a new file for update.  Since "w+" overwrites
   files, you'll want to be careful.  You may want to use what you
   have to verify the non-existence before you use "w+".

--
Don Miller                              |   #include <std.disclaimer>
Software Quality Engineering            |   #define flame_retardent \
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