Page 94 - KEC Khaitan C7 Flipbook
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CONTROL STRUCTURES                                                                     CHAPTER


                  IN PYTHON                                                                             B2

















                     Topics Covered


                     The student will be able to:
                        learn about sequential and selection control structures.
                        use logical operators and the random package.
                        work with strings and implement control statements in programs.




                  As you know, a computer program is a set of instructions given to the computer to perform
                  a specific task. These individual instructions are known as statements. All the statements are
                  executed  sequentially,  one  after  the  other,  as  they  appear  in  a  program.  However, in  some
                  situations,  we have to change the order of execution of the program based on certain conditions.
                  In such situations, we use control statements to control or change the flow of execution.



                            CONTROL STRUCTURE


                  A control structure is a programming construct that affects the flow of the execution of a program.
                  Various types of control structures provided by Python are shown below:


                                                           Control Structure




                     Sequential Statements                Selection Statements                 Iterative Statements





                            SEQUENTIAL STATEMENTS                                                       Statement 1

                  The statements  that  are executed  in sequential  order, i.e., one after the         Statement 2
                  other without any jumps, are called sequential statements. A sequential
                  structure is also known as a straight line path.                                      Statement 3






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