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From: Pat.Terry@p101.f4.n494.z5.fidonet.org (Pat Terry)
Newsgroups: comp.lang.modula2
Subject: Re: BY expression
Message-ID: <1003.25CDA26F@puddle.fidonet.org>
Date: 5 Feb 90 00:07:18 GMT
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 > >>Does anyone know why the BY expression in a FOR loop must be
 > >>a constant expression? Is there some semantic reason?

  What meaning would you like for

    FOR I := 1 TO 20 BY I DO WriteCard(I,3) END.

Does your answer tie in with the meanings you would like/expect for

     I := 1;
     FOR I := I TO 20*I DO WriteCard(I, 3) END

(I would expect the output 1 2 3 4 5 6 7 8  ... 19 20 <end> in this case)

Just wondering.

Pat

 




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