Chapter 18, Problem 18.11PE

Program Plan Intro

Sum the digits in an integer using recursion

Program plan:

• Import required packages.
• Declare the main class named “Main”.
  • Give the main method “public static void main ()”.
    • Create an object “sc” for the scanner class.
    • Get a number and store it in a variable “num”.
    • Print the sum of the digits by calling the function “sumDigits ()”.
  • Give function definition for the static method “sumDigits ()”.
    • Declare a variable “sum” and assign 0 to it.
    • Check if the value of “n” is not equal to 0.
      • Call the function “sumDigits ()” recursively to calculate the sum of digits.
    • Return the variable “sum”.