Question

Write a menu driven program for the following options.
S=1+8+26+64+125+216.
(its 26 only, not 27)

Answer 1

$\texttt{\textsf{\large{\underline{The C{o}de}:}}}$

Its actually 27 according to the logic nth term = n³. Here comes the solution to the problem.

import java.util.*;

public class MenuDriven{

   public static void main(String args[]){

       Scanner sc=new Scanner(System.in);

       System.out.println("1. Find sum of series 1 + 8 + 27 + 125 + ... N terms.");

       System.out.println("2. Exit.\n");

       System.out.print("Enter your choice: ");

       switch(sc.nextInt()){

           case 1:

           System.out.print("Enter limit: ");

           int n,i,s=0;

           n=sc.nextInt();

           for(i=1;i<=n;i++)

               s+=i*i*i;

           System.out.print("Sum: "+s);

           break;

           case 2:

           System.exit(0);

           break;

           default:

           System.out.print("Invalid Choice.");

       }

       sc.close();

   }

}

$\texttt{\textsf{\large{\underline{Logic}:}}}$

• Ask the user to enter his/her choice.
• If choice is 1, calculate the sum of the series.
• If choice is 2, exit the program.
• If choice is other than 1 or 2, display an invalid message.

See attachment for output.