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From: dewarr@my-dejanews.com
Subject: Re: Fortran or Ada?
Date: 1998/09/25
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Date: 1998-09-25T00:00:00+00:00
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In article <6ue7kp$61k@boofura.swcp.com>,
  walt@fortran.com wrote:
> dewarr@my-dejanews.com wrote:
>
> > Well it is certainly a design point of Ada to avoid situations
> > in which small lexical errors cause major differences in the
> > meaning of a program, and I think it achieves this goal pretty
> > well. Certainly better than . . .
> >
> > . . . Fortran:
> >
> >      Do 10 i = 1.6
> >
> > the latter being the (in)famous bug at the heart of the urban
> > legend that the Venus probe died because of this bug :-)
>
> By Fortran, you must mean Fortran 77 because there are three
> features in Fortran 90/95 that will cause this to be classified
> as an error:
>
> 1.  implicit none (causing Do10i to be caught as an undeclared
>     variable)
>
> 2.  Significant blanks in the free source form (making the
>     statement illegal syntactially)
>
> 3.  Use of do-end do form instead of those old-fashioned labels
>     (in which case a syntactially illegal do statement will
>     produce an end do with no matching do).
>
> BTW, I think Ada is (also) a great language.


But aren't all these three optional? And indeed the first
two are very strange options indeed, necessitated by the
gods of compatibility, right?

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