WAY WAY WAY WAY OT Re: 'goto" gone from computer languages or is it!

[Dave Dunfield]

>There's one extra local variable (char *t) which is a pointer: hardly
>expensive by any metric.  If you prefer, move the i initializer inside the
>for loop construct.  Same difference.

>The loop uses the same number of conditionals as any other example so far
>(including yours, which doesn't work ;)

I guess you missed my original solution - look back a few messages,
it uses only one conditional, and only one local variable, has no
superflous assignments, nor goto's.

The "clever" one in my last message was an illustation, not my
solution.


>> - In the last iteration of the loop you are stuffing the address
>>   value of the constant string "%u" into the for conditional
>>   (granted in any reasonable implementation this will be non-zero
>>    and will evaluate to TRUE, however it seems a bit odd and not
>>    completely necessary to the logic of the program).
>
>Your analysis somewhat (misses the point|is non-sequitur).  The unary
>construct is the entire reason this works.

It still stuffs an address into a conditional - it works, but it's
not pretty, nowhere near the goal of "structured" (remember structured
... this is a song about structured) and not something I would ever
consider using in production code.


>> - You are reading only the first element of the array, although
>>   you are adding an increasing offset to it for each iteration of
>>   the loop.
>
>Perhaps this is an issue of precedence and compiler implementation, but
>the way it works (at least under gcc) is as I suspected, which is that
>counter i gets incremented after first being added to aryp.  So it in fact
>iterates the entire array from start to end.

* is higher precedence than '+' (K&R page 49 - I know this from memory -
scary). If your compiler does the '+' first, it's broken.



>You had card punches?  We had to cut holes into ours with exacto knives.

Actually, when I last visited the Your university museum, the Curator
showed me some "manual" card punches - little steel blocks with holes
and a pin punch!

Regards,
Dave
-- 
dave04a (at)    Dave Dunfield
dunfield (dot)  Firmware development services & tools: www.dunfield.com
com             Collector of vintage computing equipment:
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