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Section 10 Notes
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 - 1. Manipulating an Array of IObjects
 - 2. Creating a new IObject

 - We will be trying out Coding Ground, this url has code to start with
    + http://tpcg.io/U0EmkN

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1. Manipulating an Array of IObjects
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 - implement the print function
    + takes as input an array of IObject pointers and a size
    + prints out each IObject

 - modify main to test this out
    + create an array of a few IObjects in main
    + initialize each item in array to an Integer
    + call print

 - implement the destruct function
    + takes as input an array of IObject pointers and a size
    + deletes each IObject

 - modify main to call destruct to avoid memory leak

 - implement the contains function
    + takes as input an array of IObject pointers and a size
    + also takes a const reference to an IObject to search for
    + returns true if IObject is found, else return false

 - modify main to test this out
    + call contains on the array of IObjects you previously created
    + test when contains return true, and when returns false

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2. Creating a new IObject
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 - ShortString is a simple class that can hold a short string
    + string can only be 4 characters _including_ null terminator
    + string is stored in the object not on the heap

 - uncomment the sketch of the ShortString class
    + implement the default constructor
    + implement the constructor from C string
    + implement the copy constructor
    + implement the destructor
    + implement the clone function
    + implement the to_str() function
    + return zero for len for now
    + return false for eq for now

 - modify main to test this out
    + create an array of a few IObjects in main
    + initialize each item in main to a ShortString
    + call print

 - modify main to demonstrate dynamic polymorphism
    + create an array of a few IObjects in main
    + initialize some items in array to an Integer
    + initialize some items in array to a ShortString
    + call print

 - finish ShortString implementation
    + implement len
    + implement eq

 - modify main to demonstrate dynamic polymorphism
    + create an array of a few IObjects in main
    + initialize some items in array to an Integer
    + initialize some items in array to a ShortString
    + call print and contains on this array