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From: dchen@oliveb.UUCP
Newsgroups: comp.lang.c
Subject: COMMA separated expresses
Message-ID: <1601@oliveb.UUCP>
Date: Thu, 25-Jun-87 02:59:17 EDT
Article-I.D.: oliveb.1601
Posted: Thu Jun 25 02:59:17 1987
Date-Received: Sat, 27-Jun-87 06:21:58 EDT
Reply-To: dchen@oliveb.UUCP (Dennis T. Chen)
Distribution: world
Organization: Olivetti ATC; Cupertino, Ca
Lines: 23

Why did my C compiler(came with 4.3bsd) complaint the "syntax error"
with the following COMMA separated express statements in a function:

funct()
{
	int i = 0;

	if ( i == 0 )
		printf("A\n"), return; /* syntax error here */
	printf("END\n");
}

But it works fine with

	if ( i == 0 )
		printf("A\n"), exit(1);	/* compile OK */

Could someone point this out ? It seems to me that rule 7.15 Comma
operator, on page 192 of C Programming Language doesn't state much
on this.

Dennis Chen
{allegra, hplabs, idi, ihnp4, sun}!oliveb!dchen