Subject: Notes on ping assigment


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> On the statistic line:
> 10 packets transmitted, 10 received,  0% packet loss, time 1004 ms
> What does the time 1004 ms represent.

That would be the elapsed time from when pinging started until the statistics
were printed.  (should be quite close to count x intvl as it is here)

In retrieving the options, if invtl is float then %f NOT %lf must
be used to read it.  If intvl is double then %lf can be used.
I don't care which it is, but I do care if the wrong format code
is used.  (I pointed out one day in class that the notes had an
error here but I forgot to fix it).