Path: utzoo!attcan!uunet!unhd!jwm775
From: jwm775@uunet!unhd (Jonathan W Miner)
Newsgroups: comp.lang.c
Subject: Re: Summary:  Converting ascii hex to pure hex values
Message-ID: <1990Nov5.000208.3226@uunet!unhd>
Date: 5 Nov 90 00:02:08 GMT
References: <302@cti1.UUCP>
Reply-To: jwm775@unhd.UUCP (Jonathan W Miner)
Distribution: comp
Organization: Computing Information Services, University of New Hampshire
Lines: 26

In article <302@cti1.UUCP> mpledger@cti1.UUCP (Mark Pledger) writes:
> [... DELETED STUFF ...]
>currently use atoi() and just write out the int to disk.  I am interested in
>creating (or finding) a routine that will take a character string as the 
>argument, and returning the hex result in the same character string.

Try this:

    void convert(s)
         char s[3];
    {
         int value;

         value = ((s[0] - '0') * 100) + ((s[1] - '0') * 10) + (s[2] - '0');
         s[0] = value / 256;
         s[1] = value % 256; 
         s[2] = 0;
    }

This assumes that the input will always be in the range '000' to '999'.

-- 
-----------------------------------------------------------------
Jonathan Miner        | I don't speak for UNH, and UNH does not 
jwm775@unhd.unh.edu   | speak for me! 
(603)868-3416         | Rather be downhill skiing... or hacking...