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From: dat0@rimfaxe.diku.dk (Dat-0 undervisningsassistent)
Newsgroups: comp.lang.pascal
Subject: Re: Is there any ISO PASCAL other than level 0 ?
Message-ID: <1990Oct30.082911.23422@diku.dk>
Date: 30 Oct 90 08:29:11 GMT
References: <24878@adm.BRL.MIL>
Sender: news@diku.dk (The Netnews System)
Organization: Department Of Computer Science, University Of Copenhagen
Lines: 25

PROLO%SBU.UFRGS.ANRS.BR@uicvm.uic.edu writes:

>        I am trying to get in hands the standard ISO IS 7185 for PASCAL. For
>the moment I have read many times about the so called "level 0" and got a
>question on whether is there another level. IS there such ?? And if so, what
>are the differences between level 0 and the others ??

Yes. There are two levels of standard-Pascal - level 0 and level 1.
They differ in one thing only: level 1 implements conformant array
parameters, ie. the possibility for a procedure to take arrays of
different sizes as parameters. A procedure-heading using conformant arrays might look like this:

procedure multiply (var A : array[LoARo..HiARo : Positive;
			          LoACo..HiACo : Positive] : of integer;
		    var B : array[LoBRo..HiBRo : Positive;
			          LoBCo..HiBCo : Positive] : of integer;
		    var C : array[LoCRo..HiCRo : Positive;
			          LoCCo..HiCCo : Positive] : of integer);

As you see, this makes it possible to make a general procedure for
matrix-multiplication.

Kristian Damm Jensen (dat0@diku.dk)
Institute of datalogi, University of Copenhagen (DIKU)
Universitetsparken 1, DK-2100 Copenhagen \, Denmark