Path: utzoo!attcan!uunet!cs.utexas.edu!wuarchive!emory!mephisto!prism!cc100aa
From: cc100aa@prism.gatech.EDU (Ray Spalding)
Newsgroups: comp.lang.c
Subject: Re: Pointer Problems
Message-ID: <12592@hydra.gatech.EDU>
Date: 15 Aug 90 15:27:14 GMT
References: <8aliOrS00WBMI1UVYX@andrew.cmu.edu>
Organization: Georgia Institute of Technology
Lines: 21

In article <8aliOrS00WBMI1UVYX@andrew.cmu.edu> gh1r+@andrew.cmu.edu (Gaurang Hirpara) writes:
>Ok. I have a struct, call it idiot, with some elements in it, nothing unusual.
>
>Now, I have another struct, which contains in it a generic 
>pointer (i.e. Ptr <pointername>). 
>How can I make <pointername> point to idiot, AND be able to access the 
>resulting pointer as a pointer to struct. My main problem is that even
>if I do manage to get them to point to the same place (which is a problem
>all by itself), I can't access the internal members of the struct. 

You should be able to use a cast, e.g:
	x = ((struct idiot *)pointername)->element;

Note that "Ptr" is not part of the C language; it's probably typedef'd
somewhere to "void *" or, to accommodate older implementations, "char *".

-- 
Ray Spalding, Technical Services, Office of Information Technology
Georgia Institute of Technology, Atlanta Georgia, 30332-0275
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