Using Dynamic Memory, A variable size array.

• Let's build a class to hold a dynamic array.
  • This array should grow as needed.
• What methods will this array need?
  • A constructor, everything needs a constructor.
  • Access, let's overload the [] operator.
  • Add items: PushBack
  • Remove items: PopBack
  • Information Size and Capacity.
• What data members will this class need?
  • Something to hold the data
  • the number of items the array can hold (capacity)
  • The number of items the array actually holds (size).
• See ArrayT.h