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From: walton@ametek.UUCP (Steve Walton)
Newsgroups: comp.sys.amiga
Subject: argv[n][n] doesn't exist
Message-ID: <816@ulowell.UUCP>
Date: Thu, 4-Dec-86 11:59:46 EST
Article-I.D.: ulowell.816
Posted: Thu Dec  4 11:59:46 1986
Date-Received: Fri, 5-Dec-86 06:08:05 EST
Sender: page@ulowell.UUCP
Lines: 24

Bill Mayhew says (and others commiserate):
>        I just ran into a minor annoyance with the Lattice C compiler
>that we have here at work.  If memory stikes me right, it's version
>3.02.
>
>I discovered that when I read argv[n][n] that the string isn't always
>terminated with a \0 as you'd expect.  This seems to happen mostly (if
>not only) when the string contains ascii characters that are digits.

Ahem...argv is not a two dimensional array, but rather an array of pointers.
As such, it CANNOT be addressed with two subscripts as argv[n][n].  There
is a difference, see K&R for details.  The correct way to find the \0 at
the end of the j'th argument is:
	char *s;
	s = argv[j];
	for (i = 0; s[i] != '\0'; i++);		/* i is now length of arg j */
If I badly misunderstood Bill's posting and have therefore insulted
everyone's intelligence, forgive me.

Stephen Walton			ARPA:	ametek!walton@csvax.caltech.edu
Ametek Computer Research Div.	BITNET:	walton@caltech
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