NetNews Offline 2/NetNews Offline Volume 2.iso/news/comp/lang/c-part1/751

Internet Message Format | 1996-08-05 | 1.6 KB

Path: mail2news.demon.co.uk!genesis.demon.co.uk
From: Lawrence Kirby <[e-mail]>
Newsgroups: comp.lang.c
Subject: Re: gets() question
Date: Tue, 09 Jan 96 01:37:04 GMT
Organization: none
Message-ID: <[e-mail]>
References: <4cosgf$[e-mail]> <4cqkt8$[e-mail]> <[e-mail]>
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In article <[e-mail]>
           [e-mail] "Tanmoy Bhattacharya" writes:

>--text follows this line--
>In article <[e-mail]> Lawrence Kirby
><[e-mail]> writes:
><snip>
>   It is certainly better to use fgets rather than gets but you could have
>   written:
>
>            fgets(s[0],sizeof s[0],stdin);
>
>   s[0] is equivalent to &s[0][0] in this context and is arguably more
>   readable. The length argument of fgets specifies the size of the array
>
>Just to point out the obvious, the first s[0] is equivalent to
>&s[0][0]. The s[0] in sizeof s[0] is not!

Right! You might consider that neither & not sizeof take the value of
their operand (i.e. treat it as an rvalue). & takes an lvalue and returns
a pointer to the dsignated object, and sizeof takes an explicit type or the
type from an expression (but not the value, indeed the expression is not
evaluated at all).

--
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Lawrence Kirby | [e-mail]
Wilts, England | [e-mail]
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