Page 201 - Computer science 868 Class 12
P. 201

28 is a Perfect number
                 Sum of all the perfect numbers up to 75 is : 34


                 OUTPUT 2
                 Please Enter any num : 2
                 Sum of all the perfect numbers up to 2 is : 0




                  Program 4      Input a decimal number and convert it into its binary equivalent.

                   1      import java.util.*;

                   2      class deci_to_bin
                   3      {

                   4          void decToBinary(int n)
                   5          {

                   6              int[] binaryNum = new int[32];
                   7              int i = 0, j;

                   8              while(n > 0)
                   9              {

                  10                  binaryNum[i] = n % 2;
                  11                  n = n / 2;
                  12                  i++;

                  13              }

                  14              for (j = i - 1; j >= 0; j--)
                  15                  System.out.print(binaryNum[j]);
                  16          }

                  17          // driver program
                  18          void main()

                  19          {
                  20              Scanner sc=new Scanner(System.in);

                  21              int n;
                  22              System.out.println("Enter a number to be checked: ");

                  23              n=sc.nextInt();
                  24              decToBinary(n);

                  25          }
                  26      }






                                                                                                                       199
                                                                                                 Statements and Scope  199
   196   197   198   199   200   201   202   203   204   205   206