Article View: comp.sys.amiga.tech
Article #7531Re: MFM/IBM Decode
From: Roland Bless
Date: Fri, 14 Dec 1990 20:48
Date: Fri, 14 Dec 1990 20:48
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1955 bytes
In article <2542@wn1.sci.kun.nl>, Olaf Seibert writes:
> Many of them are translations from German books from the publisher Data
> Becker, and those books have a reputation of containing more incorrect
> than correct information. Unfortunately, unless you already have a lot
That's true.
One Example: The Big C-Book (AMIGA) from Data Becker
("Das grosse C-Buch":Bleek/Jennrich/Schulz).
On page 82 they try to explain IN DETAIL how for()-loops in C work, but
you guess it, they aren't able to do this correctly:
for (i=0; i<5; i++) j+=2;
is naturally equivalent by definition to:
i=0; while(i<5) { j+=2; i++; };
Their version about it (WRONG!!):
1. Initialization of i (i=0); 2. Execution of the body (j+=2);
3. Incrementation of i; 4. Test the condition. #T->Step 2. #F->leave loop
They emphasize differences between for() and while() loops (execution of
the body before testing the condition at for()-loops) and show a wrong
assembler listing of the compiler output. :-D It's really ridiculous.
Greetings,
Roland
--
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Path: arc1-ca.pugleaf.net!utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!usc!sdd.hp.com!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!ira.uka.de!smurf!flatlin!spirits!rob From: rob@spirits.ka.sub.org (Roland Bless) Newsgroups: comp.sys.amiga.tech Subject: Re: MFM/IBM Decode Message-ID: <185d09ac.ARN0290@spirits.ka.sub.org> Date: 14 Dec 90 20:48:28 GMT References: <49724@eerie.acsu.Buffalo.EDU> <2542@wn1.sci.kun.nl> Reply-To: rob@spirits.ka.sub.org Followup-To: comp.sys.amiga.tech Organization: Byteable Software Products, private, Karlsruhe (FRG) Lines: 29