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From: ark@alice.UUCP (Andrew Koenig)
Newsgroups: comp.lang.c
Subject: Re: Use of " ? : " in format param to printf
Keywords: printf
Message-ID: <8801@alice.UUCP>
Date: 19 Jan 89 22:05:25 GMT
References: <1454@leah.Albany.Edu>
Organization: AT&T Bell Laboratories, Liberty Corner NJ
Lines: 12

In article <1454@leah.Albany.Edu>, rds95@leah.Albany.Edu (Robert Seals) writes:

>     printf(count == 0 ? " ---- " : " %4.0lf ", sum / count);

> Does it matter if there are unused arguments to printf?

It's OK to have unused arguments in printf, but they'll be
evaluated whether they're used or not.  Thus in this example
if count is 0, the likely result is a divide by zero error.
-- 
				--Andrew Koenig
				  ark@europa.att.com