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An array is a series of contiguous memory locations. These are typically little silicon hardware thangies that have their bit storage mechanisms in one state or another: zero (off) or one (on). They never have NO values. They may have unknown values, but values are there. The best you can do is initialize them to some known value which, to YOU, represents nada. A universally useful value for that does not exist since all values are subject to interpretation of one kind or another, depending up their presumed "type".
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