Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!hp4nl!ruuinf!prisma!fred
From: fred@prisma.cv.ruu.nl (Fred Appelman)
Newsgroups: comp.lang.c
Subject: Re: sizeof and multi-dimensional arrays
Message-ID: <fred.663069060@prisma>
Date: 5 Jan 91 09:51:00 GMT
References: <1991Jan5.050613.22303@Neon.Stanford.EDU>
Organization: University of Utrecht, 3D Computer Vision, The Netherlands
Lines: 23

In <1991Jan5.050613.22303@Neon.Stanford.EDU> dkeisen@Gang-of-Four.Stanford.EDU (Dave Eisen) writes:

>Is the following a compiler bug or am I just confused?
>
>char x[2][3];
>
>  sizeof (*x)          gives 6
>  sizeof (x[0])        gives 3.
>
>What's the scoop?
>

You are just confused. 
'x' is a two dimensional array of 2*3 elments of type char. Makes a total of
6. 'x[0]' and 'x[1]' are arrays with a length of 3 elements. So both arrays
have a size of 3.

Fred
-- 
Fred J.R. Appelman, 3D Computer Vision, Utrecht University
AZU, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands.
Telephone: +31-30-506710 Fax: +31-30-513399
e-mail: fred@cv.ruu.nl or appelman@cs.unc.edu