🚀 go-pugleaf

In article <"89-10-02-15:04:30.36*UI0T"@DKAUNI2.BITNET> Modula2 List <INFO-M2%UCF1VM.BITNET@PSUVM.PSU.EDU> writes:
>I'm not sure wether the following message got out correctly. If you
>
>PROCEDURE  Something(a:ARRAY OF CHAR; n:INTEGER);
>VAR i:CARDINAL;
>BEGIN
>   FOR i:=0 to HIGH(a) DO
>      IF i=n THEN ...
>
>produces two incompatibility errors, one each in the last two lines.
>HIGH returns an INTEGER in this implemenation, and this kind of 'mixing'
>the two types is forbidden by the compiler. To get the same result, I
>

INTEGER and CARDINAL are not compatible within expressions. They may be

>Because of that, I have given up using CARDINAL altogether.

Good. In PIM 4th ed. so has Wirth. And he's removed it from Oberon as well.

>My question is: is this incompatibility between CARDINAL and INTEGER a
>kludge in the compiler, was it meant to be that way by Wirth or is this
>kind of conversion something left to whoever writes a compiler?
>

Wirth designed it this way.

Chuck Lins
-- 
Chuck Lins               | "Exit left to funway."
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I speak for myself and no one else.