From: "Thomas Harte" <T DOT Harte AT btinternet DOT com DOT KILL_PART>
Newsgroups: comp.os.msdos.djgpp
Subject: RE : hex calculation routine!?
Date: Sat, 2 Sep 2000 23:54:23 +0100
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> Has anybody a routine to add/subtract etc. hex-values for me? Thnx in
> advance! =;)
>
> ie. 800F0F0F+8F0=??? or 800F0F0F-8F0=???.

Hex calculations are done exactly as any other, just be aware that if in
code you want to write a hex number, e.g. 2A, C expects '0x2A', and that to
get printf to display hex digits, use %x rather than %d. E.g. :

a = 0x800F0F0F+0x8F0;
printf("%x", a);

Yields '800F17FF' on the standard output.

-Thomas