An ARRAY statement is not an executable statement; it merely defines an array.

The value in parentheses indicates the number of elements in the array. In this case, there are four elements.

In the DO statement, you specify the index variable that represents the values of the array elements. Then specify the start and stop positions of the array elements.

The index value represents the position of the array element. In this case, the third element is Jul.

To process all the elements in an array, you can either specify the array dimension or use the DIM function with the array name as the argument.

Either numeric or character variables can be created by an ARRAY statement.

At the end of the second iteration, diff{i} resolves as follows:

diff{2}=wt{2+1}-wt{2}; 
diff{2}=215-200

To create temporary array elements, specify _TEMPORARY_ after the array name and dimension. Specify an initial value for each element, separated by either blanks or commas, and enclose the values in parentheses.