I'm fairly sure that the assignment doesn't allow for use of modules not covered in the class.

More to the point, though, so far as I'm aware, Getopt only recognizes options with a - or -- prefix. In this spec, the operation is specified with L, U, or D, not -L/-U/-D, so I don't think Getopt would even work here without changing the interface to the program.

In reply to Re^2: Optional Arguments..? by dsheroh
in thread Optional Arguments..? by Watergun

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