Page 198 - CA_Blue( J )_Class9
P. 198

Program 2      Print the squares of the first 5 multiple of 4.

                     1     class for_square

                     2     {
                     3         public static void main()

                     4         {
                     5

                     6             for (int i=4; i<=20; i=i+4)
                     7             {

                     8                 System.out.println("Square of "+i+ " is : "+ (i*i));
                     9             }

                    10         }
                    11     }
                  You will get the following output:















                                                            Dry Run & Output
                                 Step Number                        i                        Result(i*i)
                                      1                             4                            16

                                      2                             8                            64
                                      3                            12                           144
                                      4                            16                           256
                                      5                            20                           400

                                                                                                   Start
                  In a for loop, the condition is checked before the execution of the loop
                  body. Hence, we can call it the "Entry Control Loop”.

                  9.2.3 The while loop                                                             Test          false
                                                                                                Expression
                  Java while loop is used to execute a set of statements repeatedly if the
                  number of iterations is not known.                                                 True
                  The syntax of the while loop is:
                                                                                             Body of while loop
                      initialization;
                      while (condition for testing)
                      {
                                                                                                   Stop


                   196    Touchpad Computer Applications-IX
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