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Date: Thu, 29 Jul 2010 08:11:26 -0700
Message-ID: <AANLkTimNik3SKiSd8bR2gtcwfXzzMPAin_mN6UiD9Aiz@mail.gmail.com>
From: David Leimbach <leimy2k@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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Subject: Re: [9fans] writing to ctl using fprint and write
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On Thu, Jul 29, 2010 at 8:04 AM, erik quanstrom <quanstro@quanstro.net>wrote:

> > Thanks Erik, Sape, and Skip.  That was such a STUPID error, and I thank
> > you all for the extra eyes.  I think it is time for a break and a bowl of
> > tea...
>
> relax.  not stupid, subtle.  it takes vigilance to keep
> sizeof, nelem, strlen, and the number of characters
> straight.
>
> - erik
>
>
And you *can* use sizeof on arrays :-).

Well at least in ANSI/ISO C.  Haven't tried this on plan 9.  :-)

On my mac I get 6 and 8.

#include <stdio.h>

char blah [] = "Hello";
char * blah2 = "There";

int main  () {

        printf("sizeof blah: %ld\n", sizeof(blah));
        printf("sizeof blah2: %ld\n", sizeof(blah2));

}

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<br><br><div class=3D"gmail_quote">On Thu, Jul 29, 2010 at 8:04 AM, erik qu=
anstrom <span dir=3D"ltr">&lt;<a href=3D"mailto:quanstro@quanstro.net">quan=
stro@quanstro.net</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote=
" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class=3D"im">&gt; Thanks Erik, Sape, and Skip. =A0That was such a STUP=
ID error, and I thank<br>
&gt; you all for the extra eyes. =A0I think it is time for a break and a bo=
wl of<br>
&gt; tea...<br>
<br>
</div>relax. =A0not stupid, subtle. =A0it takes vigilance to keep<br>
sizeof, nelem, strlen, and the number of characters<br>
straight.<br>
<font color=3D"#888888"><br>
- erik<br>
<br></font></blockquote><div><br></div><div>And you *can* use sizeof on arr=
ays :-).</div><div><br></div><div>Well at least in ANSI/ISO C. =A0Haven&#39=
;t tried this on plan 9. =A0:-)</div><div><br></div><div>On my mac I get 6 =
and 8.</div>
<div><br></div><div><div>#include &lt;stdio.h&gt;</div><div><br></div><div>=
char blah [] =3D &quot;Hello&quot;;</div><div>char * blah2 =3D &quot;There&=
quot;;</div><div><br></div><div>int main =A0() {</div><div><br></div><div>=
=A0=A0 =A0 =A0 =A0printf(&quot;sizeof blah: %ld\n&quot;, sizeof(blah));</di=
v>
<div>=A0=A0 =A0 =A0 =A0printf(&quot;sizeof blah2: %ld\n&quot;, sizeof(blah2=
));</div><div><br></div><div>}</div></div><div><br></div><div>=A0</div></di=
v><br>

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