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Page 106 - 2625 PortGPt V2.1
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    THE IF STATEMENT

                      The if statement is the simplest conditional statement. In case of
                                                                                                  Start
                      the if statement, 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                            False
                                                                                                if condition
                      control of execution is passed to the next statement after the if
                      block. The syntax of the if statement is given below:                           True

                      Syntax:                                                                 Statements in if
                                                                                               block execute
                      if (Test Expression):
                          Indented statement block                                                Stop

                      # if block ends here

                                                                 Tech Fact

                         In Python, the non-zero value is interpreted as True. None and 0 are interpreted as False.

                      Program 1: To check whether a given number is positive.

                           Program1.py
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                        #Program to check if a number is positive
                        n = int (input ('Enter a number:'))
                        if(n > 0):
                            print('Entered number is positive')

                        #Statement outside the if statement
                        print('All numbers greater than 0 are positive')

                      On running the above program, we get the following output:

                           Output
                        Enter a number:6
                        Entered number is positive
                        All numbers greater than 0 are positive

                        Enter a number:-9
                        All numbers greater than 0 are positive

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