From: Helmut Djurkin <djh@tscheinig.com>
To: Mohammed Khalid Ansari <khalid@ncst.ernet.in>
Cc: linux c programming mailing list <linux-c-programming@vger.kernel.org>
Subject: Re: structure size
Date: Wed, 05 Mar 2003 08:27:26 +0000 [thread overview]
Message-ID: <3E65B4EE.8080803@tscheinig.com> (raw)
In-Reply-To: <Pine.LNX.4.33.0303051227480.30291-100000@soochak.ncst.ernet.in>
hi,
it's the alignment.
with gcc and this:
struct node {
/* member here */
} __attribute__((packed));
you will get the your "collective sizes".
Mohammed Khalid Ansari wrote:
> Hi,
>
> why the sizeof sturcture is alway greater than the collective sizes of all
> the elements in it.
>
> eg
> struct node {
> int a;
> char c;
> int b;
> };
>
> int main()
> {
> printf ("%d\n", sizeof (struct node));
> return 0;
> }
>
>
> it prints 12 in my case.
>
> where is the catch.
>
next prev parent reply other threads:[~2003-03-05 8:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-05 7:02 structure size Mohammed Khalid Ansari
2003-03-05 8:27 ` Helmut Djurkin [this message]
2003-03-25 10:00 ` strange SIGSEGV Alexi Jordanov
2003-03-05 9:06 ` (F)structure size Steven Smith
2003-03-12 22:49 ` getlogin(), prints ((NULL)) when printing multiple times in a row J.
2003-03-12 23:14 ` Glynn Clements
2003-03-13 0:18 ` getlogin(), prints ((NULL)) solved.. thnkx.. glen J.
[not found] <65256CE0.00269E0A.00@sandesh.hss.hns.com>
2003-03-06 4:03 ` structure size Mohammed Khalid Ansari
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