10 DATA 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
20 DIM A(9)        ' Array with size 10 (9 is maximum subscript), all elements are set to 0
30 FOR I = 0 TO 9
40     READ A(I)   ' Initialize by reading data
50 NEXT I
60 PRINT A(4)      ' Get 4th element of array
70 A(4) = 400      ' Set 4th element of array
80 PRINT A(4)