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Objective-C Variable Scope and Storage Class

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In previous chapters we have invested a considerable amount of time talking about variables in terms of the various types available and how they are defined. One area we have yet to cover involves the places from which a variable is accessible once it has been declared. This is a concept known as ''variable scope'' and the scope of a variable is very much dependent upon where it is declared within the Objective-C code of a program.

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