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Arrays

Rows and tables of storage.
Arrays are a convenient way of grouping a lot of variables under a single variable name. Arrays are like pigeon holes or chessboards, with each compartment or square acting as a storage place; they can be one dimensional, two dimensional or more dimensional! An array is defined using square brackets []. For example: an array of three integers called "triplet" would be declared like this:
     int triplet[3];

Notice that there is no space between the square bracket [ and the name of the array. This statement would cause space for three integers type variables to be created in memory next to each other as in the diagram below.
                 ------------------------------------
int triplet:    |           |           |            |
                 ------------------------------------


The number in the square brackets of the declaration is referred to as the `index' (plural: indicies) or `subscript' of the array and it must be an integer number between 0 and (in this case) 2. The three integers are called elements of the array and they are referred to in a program by writing:
triplet[0]
triplet[1]
triplet[2]

Note that the indicies start at zero and run up to one less than the number which is placed in the declaration (which is called the dimension of the array.)



  • Use Arrays
  • Initializing Arrays
  • Array as Parameter
  • Array as String
  • Arrays as Pointer
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