Page 114 - KEC Khaitan C3 Flipbook
P. 114

LOOPS


                  All the programs or projects developed till now ran only once. If you want to run a set
                  of statements more than once, you will either run the code again or write the script

                  again. In Scratch, you can save your time and effort by repeating the code without
                  writing the program again or writing the script again. The automatic running of a
                  set of instructions more than once is called looping. The blocks for looping are given

                  in Control category.




                  The  Repeat block  is used  to  run  a set  of instructions  for  a
                  specified number of times.





                                          The Repeat until block is used to run a set of instructions till a

                                          condition is satisfied.





                  The Forever block is used to run a set of instructions continuously
                  until stopped. The instructions inside this block will be executed
                  in a loop until the Stop         button is clicked by the user.


                  Let us create a small script to see the looping blocks use.
                  Create the following script and click on the Green Flag:



















                            CREATING A SCRATCH PROJECT


                  Scratch  allows you  to  animate  sprites  and  add  sounds  using  different  block
                  categories. Let's create an exciting project that combines movement and sound

                  using Scratch blocks!



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