Page 88 - trackpad v5.1 class 8 flipbook
P. 88

For example:
                  Robby has to paint these blank boxes to make a letter ‘U’
                   Start                         Start

                                                                               Just as plants need sunlight to produce
                                                                                glucose, algorithms need right data to
                                                                                     generate optimum results.




                  The program will be



                                                                            Repeat 4 times
                         Move 1 down and Fill Colour
                         Move 1 down and Fill Colour                        (Move 1 down and Fill Colour)
                         Move 1 down and Fill Colour
                         Move 1 down and Fill Colour                        Repeat 2 times
                         Move 1 right and Fill Colour                       (Move 1 right and Fill Colour)
                         Move 1 right and Fill Colour
                                                                            Repeat 3 times
                         Move 1 up and Fill Colour
                         Move 1 up and Fill Colour                          (Move 1 up and Fill Colour)
                         Move 1 up and Fill Colour


                               Program without a loop                              Program with a loop



                  Look at another examples:

                  1.   Move 1 step down                                       St


                       Repeat 6 times
                       (

                       Fill color

                       Move 1 right
                       )



                  2.   Repeat  until  reached  last                           St

                       column
                       (

                       Fill color

                       Move 1 right
                       )






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