Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!iuvax!watmath!watcgl!awehrmann
From: awehrmann@watcgl.waterloo.edu (August Wehrmann)
Newsgroups: comp.lang.c
Subject: Using data types before they are declared.
Message-ID: <10268@watcgl.waterloo.edu>
Date: 12 Jun 89 18:27:10 GMT
Reply-To: awehrmann@watcgl.waterloo.edu (August Wehrmann)
Organization: U. of Waterloo, Ontario
Lines: 28

I have a question: 

Is it possible, (and if so, how?), to use a data type in a declaration
of say, a union, that has not yet been declared?

Here is an example of what I'm talking about.

union Fred {              <--------
	int 	Number;            |
	element	Node;     <...........
};                                 | .
                                   | .
typedef struct {                   | .
	int	Info;              | .
	Fred	Name;     <--------  .
} *element;               <...........


Please e-mail any replies. Quick references to Kernighan and Ritchie would also
be appreciated.

Thanks in advance.

-- 
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 August Wehrmann, awehrmann@watcgl{.waterloo.edu, UWaterloo.ca} 
 Computer Graphics Lab, Department of Computer Science, University of Waterloo
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