Module #1 Mini Lab
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Write a program that takes a valid date and converts into this format:

January 01, 2001

The format of the valid date should be "01/01/2001".  The first number 
should be between 01 and 12.  The second number should be between 01 and 
31.  The last number should be a four-diget number.

Don't worry about "errors" such as "02/31/2001".

If an incorrect date is given, display an error message and ask for the 
input again.
