Re: 0xdeadbeef vs 0xdeadbeefL

viro_at_parcelfarce.linux.theplanet.co.uk
Date: 07/07/04

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    Date:	Wed, 7 Jul 2004 04:00:29 +0100
To: tom st denis <tomstdenis@yahoo.com>

    On Tue, Jul 06, 2004 at 05:06:12PM -0700, tom st denis wrote:
    > --- David Eger <eger@havoc.gtf.org> wrote:
    > > Is there a reason to add the 'L' to such a 32-bit constant like this?
    > > There doesn't seem a great rhyme to it in the headers...
    >
    > IIRC it should have the L [probably UL instead] since numerical
    > constants are of type ``int'' by default.
    >
    > Normally this isn't a problem since int == long on most platforms that
    > run Linux. However, by the standard 0xdeadbeef is not a valid unsigned
    > long constant.

    ... and that would be your F for C101. Suggested remedial reading before
    you take the test again: any textbook on C, section describing integer
    constants; alternatively, you can look it up in any revision of C standard.
    Pay attention to difference in the set of acceptable types for decimal
    and heaxdecimal constants.
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