Page 130 - Plus V4 with Adobe class 7
P. 130

Take Off                                                   Century   #Critical Thinking
                                                                                    21 st
                                                                                    Skills  #Productivity & Accountability
              If a = 8, b = 2 and c = 20, then what will be the output of the following statements?

              1.  print(a > b and b < c)   =

              2.  print(a ** b + c)           =

              3.  print(a, b, c)      =

              4.  print(a > b or b > c)   =

              5.  print(a // b – 2 + c)    =





        There are situations in life when we need to decide based on a situation. For example, if it rains, I will
        stay at home or else I shall visit the market. Similar situations arise in programming as well, where we
        need to make some decisions and based on these decisions, execute a set of commands. We need to
        determine which action is to be taken and which statement is to be executed, if the outcome is true or
        false. In this chapter, we will learn about decision making statements of Python.


             DECISION MAKING STATEMENTS


        Decision making in Python is done by using conditional statements which decide the flow of program
        execution. The following conditional statements are available in Python:
            if statement


            if...else statement
            Nested if statement

            if…elif…else ladder

        The if Statement


        The if statement is the simplest conditional statement. Here, a statement or a collection of statements
        within the if block is executed only if a certain condition or expression evaluates to True. If the condition
        evaluates to False, then the control of execution is passed to the next statement after the if block. The
        syntax of the if statement is given below:
        Syntax:


        if (Test Expression):
            Indented statement block

        # if block ends here







            128  Plus (Ver. 4.0)-VII
   125   126   127   128   129   130   131   132   133   134   135