Special two-digit number

A special two-digit number is such that when the sum of the digits is added to the product of its digits, the result is equal to the original two-digit number.

Example:
Consider the number 59.Sum of digits = 5+9=14
Product of its digits = 5 x 9 = 45
Sum of the digits and product of digits = 14 + 45 = 59

Write a program to accept a two-digit number. Add the sum of its digits to the product of its digits. If the value is equal to the number input, output the message “special-two digit number” otherwise, output the message “Not a special two-digit number”.

import java.io.*;

class Special_Q5_ICSE2014

    {

    public static void main(String args[])throws IOException

        {

            BufferedReader br=new BufferedReader (new InputStreamReader(System.in));

            System.out.print("Enter a 2 digit number : ");

            int n = Integer.parseInt(br.readLine());

             

            int first, last, sum, pro;

            if(n<10 || n>99) //Checking whether entered number is 2 digit or not

                System.out.println("Invalid Input! Number should have 2 digits only.");

            else

                {

                    first = n/10; //Finding the first digit

                    last = n%10; //Finding the last digit

                    sum = first + last; //Finding the sum of the digits

                    pro = first * last; //Finding the product of the digits

                     

                    if((sum + pro) == n)

                    {

                      System.out.println("Output : The number "+n+" is a Special Two-Digit Number.");

                    }

                    else

                    {

                      System.out.println("Output : The number is Not a Special Two-Digit Number.");

                    }

                }

        }

    }




Output:

1. Enter a 2 digit number : 79
Output : The number 79 is a Special Two-Digit Number.

2. Enter a 2 digit number : 47
Output : The number is Not a Special Two-Digit Number.