Path: utzoo!attcan!uunet!ncrlnk!ncrcae!hubcap!gatech!udel!rochester!rutgers!att!ulysses!andante!alice!debra
From: debra@alice.UUCP (Paul De Bra)
Newsgroups: comp.unix.wizards
Subject: Re: Unix problem or C problem?
Message-ID: <8789@alice.UUCP>
Date: 18 Jan 89 19:49:46 GMT
References: <245@ibd.BRL.MIL>
Reply-To: debra@alice.UUCP ()
Organization: AT&T, Bell Labs
Lines: 25

In article <245@ibd.BRL.MIL> heilpern@brl.arpa (Mark A. Heilpern (IBD) <heilpern>) writes:
>...
>	while (fscanf(input,"%d",stars)!=EOF) {
>...
>		for (count = 0; count <= stars; count++)
>...
>	I get the following error message, NOT put out from my program:
>
>PROTECTION VIOLATION: name='plot', pid=15943, pc=a410cdc, ps=80000180
>Illegal instruction

From your piece of code it looks like "stars" is either an int,
in which the fscanf line should have &stars, or else it is a pointer to
an int, in which case the for-line should have *stars.

From the protection violation i deduce it is probably the first.
The error message seems strange though. I would expect a simple
Illegal instruction, core dumped or
Memory Fault, core dumped messge. You actually get a lot of info there.

Paul.
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