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From:	"MarioC" <marioc AT no-spam DOT qitech DOT net>
Newsgroups:	comp.os.msdos.djgpp
Subject:	questions about formatting
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Message-ID:	<knoXd.1026935$35.38170845@news4.tin.it>
Date:	Tue, 08 Mar 2005 21:00:00 GMT
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Hello,
I have found something I don't understand with the precision field of 
the printf() function. The documentation states that, for floating point 
values, the precision field indicates the maximum number of decimal 
digits printed (for g and G) and the actual number of decimal digits 
printed for f and the like. I always assumed that that "maximum" 
referred to the fact that trailing zeroes (and eventually the decimal 
point) would not be printed, regardless of this value. Much to my 
surprise, the line of code:

printf ("%.1g", 1.123);

produced the output "1"; I had to use "%.2g" to get what I meant, i.e. 
one single decimal digit. Predictably enough "%.1f" does actually print 
"1.1"... Since other compilers seem to agree with this behaviour, I must 
be missing something. Would anybody kindly point me in the right 
direction?

Thanks in advance

-mario

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