Page 208 - Computer science 868 Class 12
P. 208
46 ob.getnum(num);
47 ob.ishappy();
48 }
49 }
The output of the preceding program is as follows:
OUTPUT 1
Enter a number
68
Happy No.
OUTPUT 2
Enter a number
12
Not a Happy No.
Program 9 Write a program to find the sum of the given series:
a. S = 1 - 4 + 9 - 16 + ………… to n terms
b. Print the series: 1, 11, 111, 1111, ….. N
1 import java.util.*;
2 class series
3 {
4 public static void main()
5 {
6 Scanner sc= new Scanner(System. in);
7 int ch,s=0,n,i;
8 System.out.println("1. S = 1 – 4 + 9 – 16 + ………… to n terms");
9 System.out.println("2. 1, 11, 111, 1111, … n");
10 System.out.println("Enter your choice ");
11 ch=sc.nextInt();
12 switch(ch)
13 {
14 case 1: System.out.println("Enter nth terms ");
15 n=sc.nextInt();
16 for(i=1;i<=n;i++)
17 {
206206 Touchpad Computer Science-XII

