Path: utzoo!utgpu!watserv1!watmath!att!cbnewsl!clyde!feg
From: feg@clyde.ATT.COM (Forrest Gehrke,2C-119,7239,ATTBL)
Newsgroups: comp.lang.c
Subject: Conditional/ternary Statement
Keywords: The third attempt!!
Message-ID: <4014@cbnewsl.ATT.COM>
Date: 7 Feb 90 18:38:27 GMT
Sender: nntp@cbnewsl.ATT.COM
Reply-To: feg@clyde.ATT.COM
Distribution: na
Organization: AT&T Bell Laboratories
Lines: 22

OK, sorry people.  I will get my example statement
right, perhaps on the third attempt (:-<)

Maybe I have answered my own question: the thing is
too messy to write!!

Now suppose one were sorting among unsigned ints from
0 to 4.  Would this be kosher?

#define Srt(x) ((x)==0 ? 0 : (x) < 2 ? 1 : (x) < 3 ? 2 : (x) < 4 ? 3 : 4)

It would seem to be valid, but only if exited immediately
at the first true test.  If kosher, are there any speed 
advantages over a series of  if-else, or case statements?

(I realize that a pitfall might occur if the value range
of the tested variables were less than zero or more
than 4--this is just a conjured example and is really
a question whether multiple ternary operators may be 
used in a single statement).

Forrest Gehrke feg@clyde.ATT.COM