Path: utzoo!attcan!uunet!mcvax!hp4nl!tnosoes!tom
From: tom@tnosoes.UUCP (Tom Vijlbrief)
Newsgroups: comp.lang.c++
Subject: Re: references and casts
Message-ID: <433@tnosoes.UUCP>
Date: 26 Jan 89 09:56:00 GMT
References: <26414@teknowledge-vaxc.ARPA>
Organization: TNO Institute for Perception, Soesterberg, The Netherlands
Lines: 36

mkhaw@teknowledge-vaxc.ARPA (Mike Khaw) writes:

>I have the following program:

Lines deleted...

>		sym	foo = THIRD;
>		int	far = 0;
>		int&	boo = (int) foo;
>		int&	bar = far;

>I expected "foo = 1, boo = 1".  Do I misunderstand how references
>work?

The declaration:

		int&	boo = (int) foo;

will NOT declare boo to reference variable foo. 
"boo" will reference a integer valued expression. It is
as if you had written:

int	xtemp= (int) foo;
int&	boo= xtemp;

Changing foo will not change boo.


Tom
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Tom Vijlbrief
TNO Institute for Perception
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