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From: Keith Thompson <kst-u@mib.org>
Newsgroups: comp.lang.c
Subject: Re: how does one access a specific address location in C?
Date: Thu, 16 Jun 2016 11:20:47 -0700
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James Kuyper <jameskuyper@verizon.net> writes:
[...]
> Other people have already answered you correctly, but I want to put a
> somewhat different emphasis on my answer.
>
> For any given implementation, there might not be any way to do what
> you're asking about. However, if there is, then the appropriate code is
> very likely to be:
>
>     int *pitwo = (int*)0x00000002;
>     char *pcsix = (char*)0x00000006;

Note that the use of hexadecimal with leading zeros is mainly for the
benefit of the reader, to emphasize that these are 32-bit numbers (and
assuming a machine with 32-bit addresses).  The above is exactly
equivalent to:

    int *pitwo = (int*)2;
    char *pcsix = (char*)6;

but the hex version is clearer.

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"