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From: jpw@bagend.UUCP (Parnell Watkins)
Newsgroups: comp.lang.c++
Subject: Re: how do you define classes that refer to each other ???
Message-ID: <98@bagend.UUCP>
Date: 21 Mar 90 22:55:22 GMT
References: <49689@wlbr.IMSD.CONTEL.COM>
Reply-To: jpw@bagend.UUCP (Parnell Watkins)
Organization: 1 BagShot Row, the Shire
Lines: 27

In article <49689@wlbr.IMSD.CONTEL.COM> mh@awds26.UUCP (Mike Hoegeman) writes:
>
>Now, the question is. How do I properly forward declare class 'stack'
>to class 'thing' so that everybody is happy ?
>
The answer is quit simple but I haven't seen it anywhere either ( I
wasn't particularly looking).  I just borrowed from C.

	class Foo {
		friend class Bar;
		...
	};

	class Bar {
		friend class Foo;
		...
	};

The order of the class declarations is no longer a concern.  Forward
declarations are made by the use of the keyword class.


J. Parnell Watkins, Jr. 	gatech![rebel|galbp]!dkstar!jpw
Atlanta, Ga. 30243		gatech!bagend!jpw
"The country of Colombia...has over twice as many species of birds as the 
continental United States though it is only one-seventh the size."  
---John S. Dunning, Portraits of Tropical Birds