Page 98 - trackpad v5.1 class 4 flipbook
P. 98

when     clicked
                             >  50        Less than                  if    50  < 100    then
                                                                      say 50 is less than 100






                                                                    when     clicked
                            = 50          Equals to                  if    50  = 50     then
                                                                      say Both the numbers are equal






                  LOGICAL OPERATORS
                  Logical operators are used to combine two or more conditions. Logical operators are

                  used when we want to test more than one condition and make a decision. It produces the
                  results by considering if the conditions entered are true or false. In Scratch, there are three
                  logical operators: ‘and’, ‘or’, and ‘not’.




                        Operator                Meaning                               Examples



                                          Logical and               when    clicked


                           and            The result is true if     if     100  > 50  and    100  > 60   then
                                          both the conditions         say 100 is greater than 50 and 60
                                          are true.



                                          Logical or                when    clicked

                            or            The result is             if     100  > 50    or    100  > 200   then
                                          true, if one of the         say 100 is either greater than 50 or 200
                                          statements is true.


                                          Logical not

                                          Reverses the              when    clicked

                         not              condition, i.e. it’s      if     not    50  > 100   then
                                          false if the condition

                                          is true and                 say Reverses the condition
                                          vice-versa.




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