From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Thread: 103376,11414a19b0e4a97a
X-Google-NewGroupId: yes
X-Google-Attributes: gida07f3367d7,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news2.google.com!news3.google.com!feeder.news-service.com!news.mixmin.net!news.tornevall.net!.POSTED!not-for-mail
From: "Jeffrey R. Carter" <spam.jrcarter.not@spam.acm.org>
Newsgroups: comp.lang.ada
Subject: Re: Advice on selling Ada to a C shop
Date: Sat, 19 Jun 2010 23:17:49 -0700
Organization: TornevallNET - http://news.tornevall.net
Message-ID: <hvkc1q$a0f$1@tornado.tornevall.net>
References: 
 <101bf8f3-b823-45ee-9afd-40cbafb4b7a9@t26g2000prt.googlegroups.com>
NNTP-Posting-Host: bf68b3882278be18c0c3877e92b479aa
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Trace: 7f58390734be5ad3e092d1410d5f4f69
X-Complaints-To: abuse@tornevall.net
User-Agent: Thunderbird 2.0.0.24 (X11/20100411)
X-Complaints-Language: Spoken language is english or swedish - NOT ITALIAN,
 FRENCH, GERMAN OR ANY OTHER LANGUAGE!
In-Reply-To: 
 <101bf8f3-b823-45ee-9afd-40cbafb4b7a9@t26g2000prt.googlegroups.com>
X-Validate-Post: 
 http://news.tornevall.net/validate.php?trace=7f58390734be5ad3e092d1410d5f4f69
X-SpeedUI: 1738
X-Complaints-Italiano: Non abbiamo padronanza della lingua italiana - se
 mandate una email scrivete solo in Inglese, grazie
X-Posting-User: 0243687135df8c4b260dd4a9a93c79bd
Xref: g2news2.google.com comp.lang.ada:12799
Date: 2010-06-19T23:17:49-07:00
List-Id: <comp.lang.ada>

usenet@scriptoriumdesigns.com wrote:
> 
> In the end, it seems, it all comes down to money.  Money saved in
> greater productivity and less debugging, money saved in lower
> liability and maintenance, money gained from satisfied customers who
> get a robust product, and maybe even money saved in having programmers
> who have a more powerful and safer tool at their disposal.

Where we have hard data, they show that Ada reaches deployment at half the cost 
of C, with a quarter as many post-deployment errors which cost a tenth as much 
to fix (factor of 40 reduction in post-deployment error fix cost).

The hard data include the Rational assessment for compiler development:

http://adaic.org/whyada/ada-vs-c/cada_art.html

and a study by Pratt and Whitney reported here on jet-engine control SW (I'm not 
aware of any link to this).

There's also McCormick's academic results, in which no students familiar with C 
were able to complete a real-time project in C controlling a model railway, even 
when given 60% of the solution, while 75% of students familiar with C but not 
Ada were able to complete the same project in Ada when given < 20%:

http://www.stsc.hill.af.mil/crosstalk/2000/08/mccormick.html

http://adaic.org/whyada/ada-vs-c.html is a good overall reference.

-- 
Jeff Carter
"Perfidious English mouse-dropping hoarders."
Monty Python & the Holy Grail
10