From:	Damian Yerrick <Bullcr_pd_yerrick AT hotmail DOT comRemoveBullcr_p>
Newsgroups:	comp.lang.c,comp.os.msdos.djgpp
Subject:	Re: hex calculation routine!?
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Posted and emailed to ^Hawk^ <Hawk AT DarkSoft DOT Net>:

>Has anybody a routine to add/subtract etc. hex-values for me? Thnx in
>advance! =;)
>
>ie. 800F0F0F+8F0=??? or 800F0F0F-8F0=???.

/* assuming unsigned long is a 32-bit or larger data type */

unsigned long foo = 0x800f0f0f
unsigned long bar = 0x8f0

printf("%lx - %lx = %lx\n", foo, bar, foo - bar);

IIRC, %x prints an int as hexadecimal, and %lx prints a long as
hexadecimal.  Crossposted to comp.lang.c for further comment on this
portable language issue.

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