Re: what is Hex?
- From: "Ian D. Nichols" <inich@xxxxxxxxxx>
- To: <programmingblind@xxxxxxxxxxxxx>
- Date: Wed, 20 Feb 2008 16:37:49 -0500
Hi,
To add a little more to this topic, for the general inlightenment of those
who don't already know:
In Intel assembly language, a hexadecimal number must have an "h" at the
end, an octal number must end with a "o", and a binary number with a "b".
Without any of these, the assembler assumes the number is decinal. Further,
a hexadecimal number that begins with any of the digits "a" to "F" must
begin with a zero as well as ending with an "h", otherwise the assembler
tries to interpret it as a label or variable.
All the best,
Ian
Ian D. Nichols,
Toronto, Canada
----- Original Message -----
From: "Jamal Mazrui" <empower@xxxxxxxxx>
To: <programmingblind@xxxxxxxxxxxxx>
Sent: Wednesday, February 20, 2008 1:43 PM
Subject: Re: what is Hex?
By the way, I think someone said that a hex number starts with 0. I don't
think that's quite right. C derived languages typically distinguish a hex
number with a preceding 0x, but the number is what follows the x. Other
languages or contexts use different conventions to distinguish hex from
decimal, e.g., Visual Basic uses a preceding &h sequence and Unicode uses
a preceding u. In other contexts, the number is understood to be hex, so
no additional prefix or suffix is needed.
Here is a long Wikipedia article on hex
http://en.wikipedia.org/wiki/Hexadecimal
Cheers,
Jamal
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