Question

Using the switch statement, write a menu driven program to:
(i) Generate and display the first 10 terms of the Fibonacci series 0,1,1,2,3,5….The first two Fibonacci numbers are 0 and 1, and each subsequent number is the sum of the previous two.
(ii)Find the sum of the digits of an integer that is input.
Sample Input: 15390
Sample Output: Sum of the digits=18
For an incorrect choice, an appropriate error message should be displayed

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Code

				
					import java.util.Scanner;

public class program8
{
	public static void main(String[] args)
	{
	    int choice=0;
		Scanner sc = new Scanner(System.in);
		
		System.out.println("press 1 for Fibonacci Sequence");
		System.out.println("press 2 for Sum of Digits");
		System.out.print("Enter choice: ");
		choice =sc.nextInt();
		switch (choice)
		{
			case 1:
				int a = 0;
				int b = 1;
				System.out.print("0 1 ");
				for (int i = 3; i <= 10; i++)
				{
					int c = a + b;
					System.out.print(c + " ");
					a = b;
					b = c;
				}
				break;
			case 2:
				System.out.print("Enter a number: ");
				int num = sc.nextInt();
				int sum = 0;
				while (num > 0)
				{
					int rem = num % 10;
					sum = sum + rem;
					num = num / 10;
				}
				System.out.println("Sum of digits is " + sum);
				break;
			default:
				System.out.println("Invalid Choice");
		}
	}
}