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From: "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>
Newsgroups: comp.lang.ada
Subject: Re: New to Ada, why these warning messages?
Date: Sat, 2 Jan 2016 15:53:36 -0700
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Date: 2016-01-02T15:53:36-07:00
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On 01/02/2016 02:05 PM, Bob Duff wrote:
> "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org> writes:
> 
>> We have hard data across multiple application domains showing that deployed C
>> has 4 times the errors of deployed Ada.
> 
> Do you have a cite for that?  (I know about the Steve Ziegler paper.)

There's Ziegler's paper, which you know about, at

http://archive.adaic.com/intro/ada-vs-c/cada_art.html#xtocid153455

(for those who don't know about it) and there was a posting here on c.l.a by
Marin Condic about jet-engine control S/W at Pratt & Whitney that reported
similar results; about 4 times the errors and about 10 times the effort per
error was the average I took away from those.

Some would also cite McCormick's real-time course results for this, but while it
clearly shows reduction in development effort for Ada compared to C, since no
one ever finished the project in C, I can't see that it provides any information
on error rates. Information about it is at

http://static1.1.sqspcdn.com/static/f/702523/9458053/1290008042427/200008-McCormick.pdf?token=C60YTOwv6V6y%2BJDCChhjKp2Vp4U%3D

for those not familiar with it.

-- 
Jeff Carter
"If I could find a sheriff who so offends the citizens of Rock
Ridge that his very appearance would drive them out of town ...
but where would I find such a man? Why am I asking you?"
Blazing Saddles
37