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From: kamal@wpi.WPI.EDU (Kamal Z Zamli)
Newsgroups: comp.lang.pascal
Subject: Re: Help Me!!! What's wrong with this simple problem?
Message-ID: <1990Nov28.191625.12509@wpi.WPI.EDU>
Date: 28 Nov 90 19:16:25 GMT
References: <527@shum.UUCP> <19956@oolong.la.locus.com> <28893@shamash.cdc.com>
Organization: Worcester Polytechnic Institute
Lines: 24

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.


The reason that Turbo Pascal gives you an error is that you define
j as of type word.  if you declare a var of type word you must
make sure that its value will never go negative.

  In other word 0<j<64000

Hope that's help