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From: decomyn@penguin.uss.tek.com
Newsgroups: comp.lang.pascal
Subject: Re: Help Me!!! What's wrong with this simple problem?
Message-ID: <6936@tekgen.BV.TEK.COM>
Date: 28 Nov 90 16:40:33 GMT
References: <527@shum.UUCP> <19956@oolong.la.locus.com> <28893@shamash.cdc.com>
Sender: news@tekgen.BV.TEK.COM
Reply-To: decomyn@penguin.uss.tek.com (Vergil William de Comyn)
Organization: Tektronix, Inc., Beaverton,  OR.
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In article <28893@shamash.cdc.com> mpe@shamash.UUCP (Mike Ebsen) writes:
>What's wrong with this problem in Turbo Pascal 5.0...
>
>      Program test;
>      var
>        i : integer;
>        j : word;
>      begin
>        j:=3;
>        i:=j-10;
>        writeln(j,'     ',i);
>      end.
>
>My compiler tells me that the assignment of -7 into i (an integer) 
>is an error.

Looks like a minor TP bug.  What appears (to me) to be happening is that
the internal representation of j-10 is being treated as arithmetic on a 
word value.  Since -7 is an illegal value for a word variable, the 
resulting code is returning an error (you didn't say exactly what error
code TP was giving you, so this is just a guess.)

Try typecasting j into an integer... (blast, my references are at home.  
I *think* you can do that by entering the following:

	i:=integer(j)-10;

in place of the line giving you the error, but I'm not certain.)

Good Luck

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Brendt Hess a.k.a.             | Disclaimer: Opinions?  I don't even work here!
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