Path: utzoo!utgpu!water!watmath!clyde!bellcore!faline!scherzo!allegra!princeton!udel!gatech!bloom-beacon!husc6!cmcl2!brl-adm!adm!Alan_T._Cote.OsbuSouth@Xerox.COM
From: Alan_T._Cote.OsbuSouth@Xerox.COM
Newsgroups: comp.lang.c
Subject: Re: struct a <---> struct b
Message-ID: <11774@brl-adm.ARPA>
Date: 11 Feb 88 20:23:41 GMT
Sender: news@brl-adm.ARPA
Lines: 22
Posted: Thu Feb 11 15:23:41 1988

Finally -- one I can answer!!

>What is the best way to declare three different structures, each containing a pointer
>to the other two? I keep running into a forward referencing error.

Try declaring all three as externals ahead of time.  Try the following:

    struct s
      {
      struct s *p0;
      struct s *p1;
      };

    extern struct s a;
    extern struct s b;
    extern struct s c;

    struct s a = { &b, &c };
    struct s b = { &a, &c };
    struct s c = { &a, &b };

How's that?!?