Two-Dimensional Arrays

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Presentation transcript:

Two-Dimensional Arrays Robert Reaves

Two-Dimensional Array Used to represent items in a table with rows and columns, of the same data type. Good for representing board games, where the screen is though of as a two-dimensional array. A component in a two-dimensional array is accessed by specifying the row and column indexes of the item. Think of a map!

Array Declaration DataType ArrayName [ ConstIntExpression ] [ ConstIntExpression ]; Example: const int NUM_ROWS = 100; const int NUM_COLS = 9; float alpha [NUM_ROWS][NUM_COLS];

Array Access To access an individual component of an array, two expressions are used to specify its position. Array Component Access ArrayName [ IndexExpression ] [ IndexExpression ]; Example: alpha[0][5] = 36.4;