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From: "Chris Thomasson" <xxx@xxx.xxx>
Newsgroups: comp.lang.ada,comp.lang.c
Subject: Re: computer language used to program Mars Lander
Date: Thu, 17 Jul 2008 15:30:39 -0700
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Date: 2008-07-17T15:30:39-07:00
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"Paul Hsieh" <websnarf@gmail.com> wrote in message 
news:13a2f4f0-6ec1-4570-b6bf-1621cfb32db2@a2g2000prm.googlegroups.com...
On Jul 14, 4:49 am, Nick Keighley <nick_keighley_nos...@hotmail.com>
wrote:
> > On 14 Jul, 12:18, "jhc0...@gmail.com" <jhc0...@gmail.com> wrote:
> >
> > > Interesting article I came across on Slashdot:
> >
> > >http://developers.slashdot.org/developers/08/07/10/213211.shtml
> >
> > > They are using C at JPL to program Mars Lander and just about
> > > everything now! Not Ada. Anyone got an explanation? I wonder also, do
> > > they really mean C++ when they say C. In my experience, this is a
> > > frequent, although disagreeable usage.
> >
> > contrary to popular expectations space probes are very
> > conservative in their use of technology. Processors are old
> > (and hence proven) memories are small (less vulnerable to radiation).

> Indeed.  Ada is used by the military, because they have much more
> sophisticated hardware in tanks and fighter jets.

Is this a trolling attempt? Anyway, the military uses C++ for all critical
system software in state-of-the-art fighter-bombers because they have much
more sophisticated hardware:

http://www.research.att.com/~bs/JSF-AV-rules.pdf

http://www.ldra.co.uk/nologindownload.asp?id=52

:^/




> I would expect that
> perhaps NASA also uses it for the space shuttle.

[...]