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Path: utzoo!decvax!decwrl!ucbvax!tektools.tek.CSNET!bobp
From: bobp@tektools.tek.CSNET.UUCP
Newsgroups: mod.computers.vax
Subject: Potential C problem
Message-ID: <8606261652.AA25082@tektools.TEK>
Date: Thu, 26-Jun-86 12:52:27 EDT
Article-I.D.: tektools.8606261652.AA25082
Posted: Thu Jun 26 12:52:27 1986
Date-Received: Sat, 28-Jun-86 00:44:18 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: Robert Perry <bobp%tektools.uucp@CSNET-RELAY.ARPA>
Organization: Tektronix, Inc., Beaverton, OR.
Lines: 44
Approved: info-vax@sri-kl.arpa


	Perhaps I missed something in the documentation, but can anyone
tell me why the VMS C compiler doesn't allow a value of 0 in %x1 as in the
following example ?

-------------------------------------------------------------------
$! c sscanf/fscanf %x1 bug
$cre bug.c
#include <stdio.h>
main()
{
    int c;
    int d;

    c=getc(stdin);
    if (sscanf(&c,"%x1",&d) == 0)
       printf("not a hex character\n");
    else
       printf("hex character = %d\n",d);
}
$
$cc bug
$link bug,sys$library:vaxcrtl/lib
$run bug
1
$run bug
f
$run bug
0
$

----------------------------------------------------------

-- 
Robert N. Perry (Bob)
Tektronix, Inc. 

tektronix!tektools!bobp
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"When I works, I works hard. When I sits, I sits easy. When I thinks, I goes
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