Question

write a menu driven program in java for sum of series

Answer 1

import java.io.*; class SwitchStatement { public static void main(String argsQ) throws IOException { InputStreamReader reader = new InputStreamReader(System.in); BufferedReader input = new BufferedReader(reader); System.out.println(“l-Sum of Series:”); System.out.println(“2-Display Special Series:”); System.out.println(“Enter your choice:”); String n1 = input.readLine( ); int ch = Integer.parselnt(nl); System.out.println(“Enter Number of Terms String t = input.readLine(); int n = Integer.parselnt(t); switch (ch) { case 1: int sign = -1; double term = 0; double sum = 0; int x = 2; System.out.println(“Value of x: ” +x); System.out.println(“Number of terms: ” +n); sum + = x; // First term added here, for (int i = 2; i < = n; i+ +){ term = sign * Math.pow(x,i); sum + = term; sign *= -1; } System.out.println(“Sum of Series +sum); break; case 2 : int num; System.out.println(“Enter the number of terms: ”); String tm = input.readLine(); . num = Integer.parselnt(tm); int s = 0, c; for (c = 1; c < = num; c+ +){ s = s * 10 + 1; System.out.print(s + ” “); } break; } } }