Subject:  Deficiencies in assn5 code resources

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The main programs in sender.c and receiver.c were deficient in
several ways -- the most important of which was a glaring latent
bug in sender.c caused by the programmer's (me) failure to
initialize the len variable.

I have cleaned both sender.c and receiver.c up a little and
if you have already downloaded either one you should definitely
GET A NEW COPY.

Thanks to Ms. Feaster for pointing this one out!