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You can declare an array to work with a set of values of the same data type. An array is a single variable with many compartments to store values, while a scalar variable (that is, not an array) has only one storage compartment in which it can store only one value. You can refer to the array as a whole when you want to refer to all the values it holds, or you can refer to its individual elements one at a time.
- Rajesh Manem July 16, 2011