From: "Ankit Jain" <ankitjain1580@yahoo.com>
To: Patrick Percot <ppercot@free.fr>
Cc: gcc <gcc-help@gcc.gnu.org>
Subject: Re: complex variable
Date: Mon, 06 Sep 2004 12:48:00 -0000 [thread overview]
Message-ID: <20040906124758.68435.qmail@web52905.mail.yahoo.com> (raw)
In-Reply-To: <20040906.143802.63132483.ppercot@free.fr>
"fread and fwrite return the number of items
successfully read "
well i am reading 32 complex neumbers...sorry i dont
understand why it whould be 16 and not 32?
ankit
--- Patrick Percot <ppercot@free.fr> wrote:
> On Mon, 6 Sep 2004 13:22:15 +0100 (BST), Ankit Jain
> <ankitjain1580@yahoo.com> wrote
>
> > 1 #include<stdlib.h>
> > 2 #include<complex.h>
> > 3 #include<stdio.h>
> > 4
> > 5 int main()
> > 6 {
> > 7 FILE *fp;
> > 8 fp=fopen("test_data.dat","rb");
> > 9 int N=32,i=0;
> > 10 complex x,*in;
> > 11 in=malloc(sizeof(complex)*N);
> > 12 if (fread(in,16,32*16,fp) != 32)
>
> The manual page says :
>
> RETURN VALUE
> fread and fwrite return the number of items
> successfully read or
> written (i.e., not the number of
> characters). If an error
> occurs, or the end-of-file is reached, the
> return value is a
> short item count (or zero).
>
> So if fread is OK, it returns 16 not 32.
>
> > 13 printf("error in reading from
> file
> > failed\n");
> > 14 else{
> > 15 for(i=0;i<N;i++)
> > 16 printf("%lf\t",*(in+i+0));
> > 17 }
> > 18 return 0;
> > 19 }
> >
> > it gives error
> > "error in reading the file"
> >
> > whats wrong?
> >
> > ankit
> >
> >
>
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>
> Ã+
> PP
> --
> Groupe Morbihannais d'Utilisateurs de Logiciels
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> 7951 C5C2 E44A A0B5
>
> Patrick Percot.
>
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next parent reply other threads:[~2004-09-06 12:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20040906.143802.63132483.ppercot@free.fr>
2004-09-06 12:48 ` Ankit Jain [this message]
2004-09-06 13:12 ` Claudio Bley
[not found] <413C5C4D.9070107@redpinesignals.com>
2004-09-06 13:45 ` Ankit Jain
2004-09-06 14:09 ` Patrick Percot
2004-09-06 12:22 Ankit Jain
2004-09-06 13:32 ` Ankit Jain
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