This task is about arrays.

For hashes or associative arrays, please see Creating an Associative Array.

For a definition and in-depth discussion of what an array is, see Array.



Task

Show basic array syntax in your language.

Basically, create an array, assign a value to it, and retrieve an element   (if available, show both fixed-length arrays and
dynamic arrays, pushing a value into it).

Please discuss at Village Pump:   Arrays.

Please merge code in from these obsolete tasks:

   Creating an Array
   Assigning Values to an Array
   Retrieving an Element of an Array


Related tasks

   Collections
   Creating an Associative Array
   Two-dimensional array (runtime)


/*REXX program  demonstrates a  simple  array usage.                    */
a.='not found'                         /*value for all  a.xxx  (so far).*/
                do j=1  to 100         /*start at 1, define 100 elements*/
                a.j=-j*1000            /*define as negative J thousand. */
                end   /*j*/            /*the above defines 100 elements.*/
 
say 'element 50 is:'   a.50
say 'element 3000 is:' a.3000
                                       /*stick a fork in it, we're done.*/