Question – 6
import java.util.Scanner;
class Question6
{
public static void main()
{
Scanner scn = new Scanner(System.in);
System.out.println("\n\t1. Sum of Series");
System.out.println("\n\t2. Print series\n");
System.out.print("\tEnter your Choice : ");
int num = scn.nextInt();
System.out.print("\n\t");
switch(num)
{
case 1 : double s=0;int x=2;
for(int t=1;t<=20;t++)
{
if(t%2==0)
s-=Math.pow(x,t);
else
s+=Math.pow(x,t);
}
System.out.println("Sum of Series : "+s);
break;
case 2 :int p=0;
for(int t=0;t<5;t++)
{
p+=(int)Math.pow(10,t);
System.out.print(p+" ");
}
break;
default : System.out.println("Invalid Choice ");
}
}
}