Path: utzoo!attcan!uunet!seismo!sundc!pitstop!sun!quintus!ok
From: ok@quintus.uucp (Richard A. O'Keefe)
Newsgroups: comp.lang.c
Subject: Re: `if (a = b)' (was Standard indentation?)
Message-ID: <861@quintus.UUCP>
Date: 14 Dec 88 02:48:48 GMT
References: <5@rsoft.UUCP> <1071@goofy.megatest.UUCP>
Sender: news@quintus.UUCP
Reply-To: ok@quintus.UUCP (Richard A. O'Keefe)
Organization: Quintus Computer Systems, Inc.
Lines: 20

In article <1071@goofy.megatest.UUCP> djones@megatest.UUCP (Dave Jones) writes:
>{ int ch;
>  while( (ch = getchar()) != EOF )
>    process(ch);
>}
>
>This says it almost literally,  "While I get a ch that is not 
>a sentinal, I want to continue processing."

I very much like embedded assignments, but that's a poor argument.
To exit a loop when you find a sentinel (that's two Es, no As), you can do
	/* C version */			-- ADA version
	for (;;) {			loop
	    ch = getchar();		    get(ch);
	    if (ch == EOF) break;	    exit when ch = sentinel;
	    process(ch);		    process(ch);
	}				end loop

I use the "while" version as an idiom for reading from a stream,
but it isn't as general a method as the use of 'break'.