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From: s350817@student.uq.edu.au
Subject: Re: Software landmines (loops)
Date: 1998/10/08
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Organization: Department of Computer Science and Electrical Engineering,
 The University of Queensland
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Date: 1998-10-08T00:00:00+00:00
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Graham Perkins wrote:
> 
> Robert C. Martin wrote:
> > >> >loop
> > >> >    ... stuff
> > >> >    exit when ;
> > >> >    ... stuff
> > >> >end loop;
> > ...
> > The question that the post was addressing had to do with the definition of
> > structured programming.  A mid exit loop does not fall within the bounds
> > defined by structured programming because the loop body does not then have a
> > single entry and a single exit.
> 
> I beg to differ.
> 
> The construct as a whole has single entry and exit points.  So I
> think we could be entitled to regard it as a structured programming
> construct.  Try slicing a CASE flowchart across the middle .. you
> get more than one flow line crossing the cut!
> 
> Crucially, other parts of the program may not transfer control
> to any intermediate point between LOOP-EXIT, nor gain control
> from any such point.
> 
> ----------------------------------------------------------------
> Graham Perkins, De Montfort University, Milton Keynes
> http://www.mk.dmu.ac.uk/~gperkins/

Assignment 1. Q 11