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From: "Frank J. Lhota" <NOSPAM.Lhota.adarose@verizon.net>
Newsgroups: comp.lang.ada,comp.lang.fortran
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Subject: Re: Shortcut logicals (was: Re: F200x )
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Date: Tue, 01 Feb 2005 16:57:20 GMT
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Date: 2005-02-01T16:57:20+00:00
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"Martin Krischik" <martin@krischik.com> wrote in message 
news:1107266645.d89440009860d548c1e3d72cdc821e0c@teranews...
> I fully agree with you here - and most Ada users will do as well. I would
> use () in C and C++ as well - for clarity.
>
> This is of corse a cross post with comp.lang.fortran and I wonder how they
> see our solution to the problem. Is it suitable for Fortran 2003 as well 
> or
> do they need another solution?

In defense of Fortran, as early as Fortran '66 (back in the bad old days of 
punch cards, batch processing and paper print-outs), it was illegal to write 
something like

    ISGOOD .XOR. ISFREE .XOR. ISHERE

without parentheses, since it is not obvious how this expression was to be 
evaluated.

I'm also glad that Ada does not accept

    A ** B ** C

since I know programming languages that would evaluate this as

    ( A ** B ) ** C

as well as languages that would evaluate this as

    A ** ( B ** C )