Multidimensional arrays

You can have arrays in multiple dimensions:

        datatype = array [enum_type1, enum_type2] of datatype;

The comma separates the dimensions, and referring to the array would be done with:

     a [5, 3]

Two-dimensional arrays are useful for programming board games. A tic tac toe board could have these type and variable declarations:

         StatusType = (X, O, Blank);
         BoardType = array[1..3,1..3] of StatusType;
         Board : BoardType;

You could initialize the board with:

     for count1 := 1 to 3 do
         for count2 := 1 to 3 do
             Board[count1, count2] := Blank;

You can, of course, use three- or higher-dimensional arrays.