Page 575 - ComputerScience_Class_11

6 {

7 num = n;
8 }

9 int sumOfFactors(int i)//finding sum of factor
10 {
11 if(i == 1)

12 return 1 + sumOfFactors(i + 1);
13 else if(i < num && num % i == 0)
14 return i + sumOfFactors(i + 1);

15 else if(i < num && num % i != 0)
16 return 0 + sumOfFactors(i + 1);
17 else

18 return 0;
19 }
20 void check()

21 {
22 if(num == sumOfFactors(1))
23 System.out.println(num + " is Perfect.");

24 else
25 System.out.println(num + " is not Perfect.");
26 }

27 public static void main(String args[])
28 {//start of main
29 Scanner sc=new Scanner(System.in);

30 System.out.print("Number: ");
31 int n = sc.nextInt();

32 Perfect obj = new Perfect(n);
33 obj.check();
34 }//end of main

35 }//end of class
The output of the preceding program is as follows:

BlueJ: Terminal Window - Java

Options

Number: 28
28 is Perfect.

Internal Assessment 573