Question

OF JAVA

Q1- Using switch statement, write a menu driven program for the following: (i) To find and display the sum of the series given below: S = a- a 3 /5 + a5 /9 - a 7 /13 ……………………. to n (where a = 2)

(ii) To display the following series: 1 , 11 , 111 , 1111 , 11111 For an incorrect option, an appropriate error message should be displayed.​



PLEASE GIVE THE ANSWER

Answer 1

The sum of the series is:

S = a- a 3 /5 + a5 /9 - a 7 /13 …………………….to n.

Where the value of a=2.

The output should be 1,11,111,1111,11111.

Explanation:

import java.util.Scanner;

public class abc  

{

public static void main(String args[])

{

Scanner sc = new Scanner(System.in);

System.out.print("Enter the number : ");

int n = sc.nextInt();

int s = 0, c;                                        

for (c = 1; c <= n; c++)                          

{

 s = s * 10 + 1;

 System.out.print(s + " ");

}                                                          

}

}