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From: dg@lakart.UUCP (David Goodenough)
Newsgroups: comp.unix.wizards
Subject: Re: Unix problem or C problem?
Message-ID: <396@lakart.UUCP>
Date: 19 Jan 89 16:10:05 GMT
References: <245@ibd.BRL.MIL>
Organization: Lakart Corporation, Newton, MA
Lines: 29

From article <245@ibd.BRL.MIL>, by heilpern@ibd.BRL.MIL (Mark A. Heilpern ):
> 	When running a program with the following code:
> 
> 	while (fscanf(input,"%d",stars)!=EOF)
>	{
> 		fprintf(stderr,"OK to this point.\n");
> 		fprintf(output,"%4d |",lines++);
> 		stars /= 50;
> 		for (count = 0; count <= stars; count++)
> 			fprintf(output,"*");
> 		fprintf(output,"\n");
> 	}
> 
> 	I get the following error message, NOT put out from my program:

Try fscanf(input, "%d", &stars) 
			^
			^ TO ASSIGN INTO AN int, scanf() NEEDS THE ADDRESS

As an aside, I generally avoid testing scanf() values against EOF. scanf()
returns the number of successful assignments (1 in this case), so you may
be a lot safer saying:

	while (fscanf(input, "%d", &stars) == 1)
-- 
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