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Step 3:   From toolbox, click on ‘Arrays’, and select ‘set list to
                            array’ block.

                  Step 4:   In the ‘set list to array’ block, click on the drop-down
                            and select variable ‘a’. In the ‘set a to array if’ block,

                            write value=10, 20, in place of 0 and 1, and click on
                            ‘+’ to add new values as 30, 40, 50. Move the ‘set list
                            to array’ block to ‘on start’ block.

                  Step 5:   From ‘Array’ select ‘length of array’ block. In ‘length
                            of Array’ block, select ‘a’ from the drop down. Click

                            on ‘Text’, select the ‘join’ block. In ‘join’ block replace
                            the first text box with ‘Length of array is:’ and drop
                            ‘length of array’ block in the second text box.







                  Step 6:   From ‘Game’,  select  ‘splash’  block.  Place  the  ‘join’  block  in  ‘splash’  block,  and

                            Place the ‘splash’ block, in ‘on start’ block, below the ‘set list to array’ block.
















                  Step 7:   Click on the ‘Start the simulator’ button to see the output:



















                      Well done,  you have learned to create an array and calculate its length.



                                                                            Understanding Arrays & Collections   63
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