Phillip Helbig wrote:
>
> > Here's a method without dummy induction variables:
> >
> > BLOCK_LABEL: DO
> >
> > ...
> >
> > EXIT BLOCK_LABEL
> > END DO BLOCK_LABEL
> The above doesn't need dummy induction variables, and of course DOES
> need the label (as a rule) if they are to be nested
I don't see why a label is needed, even if they are (properly) nested. What's wrong with
DO ! BLOCK
...
DO ! BLOCK
...
EXIT; END DO ! BLOCK
...
EXIT; END DO ! BLOCK
Notice here that if you wanted to use BLOCK and END BLOCK, sed is a sufficient
preprocessor. Of course, that prevents you from using a label if you want one.
By now I may have lost the point of Van's original example, and be way off base
with this simple form.
Bill
--
William F. Mitchell
Mathematical and Computational Sciences Division
National Institute of Standards and Technology
[log in to unmask] http://math.nist.gov/~mitchell
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