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From: kah@hpfclq.UUCP
Newsgroups: net.lang.c
Subject: Re: K&R App A, par. 8 & 8.2, on Declarat
Message-ID: <72300007@hpfclq.UUCP>
Date: Sun, 8-Jul-84 09:59:00 EDT
Article-I.D.: hpfclq.72300007
Posted: Sun Jul  8 09:59:00 1984
Date-Received: Sun, 8-Jul-84 09:03:24 EDT
References: <180@log-hb.UUCP>
Organization: Hewlett-Packard Fort Collins Systems Division - Fort Collins, CO
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Nf-ID: #R:log-hb:-18000:hpfclq:72300007:000:646
Nf-From: hpfclq!kah    Jul  5 08:59:00 1984


Re: whether 
	a =1;
can be a legal declaration.

See K&R, Appendix A, 18.3 and 18.4.  Note that the "declaration-list"
productions you reference refer to statements -- ie, declarations
within a function-definition.  And here it is necessary to have either
an sc-specifier or a type-specifier in order to distinguish a declaration
statement from an expression statement.

However, at the global level, declarations are data-definition's (see 18.4),
and here both the type-specifier and (extern | static) are optional.
So
	x;
	y = 1;
are legal external data-definitions
and are equivalent to
	int x;
	int y = 1;
respectively.

K.Harris
hpfcla!kah