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Date: 28 Jul 93 05:41:48 GMT
From: cis.ohio-state.edu!math.ohio-state.edu!howland.reston.ans.net!agate!libra
ry.ucla.edu!ddsw1!news.kei.com!ub!dsinc!gvls1!lonjers@ucbvax.Berkeley.EDU  (Jim
 Lonjers)
Subject: Re: Underscore ("_") in numeric literals
Message-ID: <1993Jul28.054148.18784@VFL.Paramax.COM>
List-Id: <comp.lang.ada>

In article <22lte3$nqm@nic.lth.se> dag@control.lth.se (Dag Bruck) writes:
>
>I would like to know to what extent people use undescore ("_")
>characters in numeric literals, e.g., "100_000".  Please send me your
>opinions, etc.
>
>The reason is that the C++ standardization committees have received a
>proposal to allow "_" in numeric literals.  We are interested in some
>sort of indication if people find this feature useful, and if it is
>commonly used in languages that have it.  If nobody uses "_" there is
>no reason to add it to C++, and if it provides a significant
>improvement in readability, C++ could use all the help it can get :-)
>
>
>			Thanks for your help,
>
>			Dag Bruck

We use _ in all of our constants of 5 digits or greater, and in many that
are four digits long.  Very useful.  The Ada POSIX standard (IEEE Std
1003.5) uses it in the version identifier that is really a date.  It
has the form of dd_dddd (yes, four digits to the right of the underscore).