Twenty Numbers V3

// Shavit Borisov
// CW

import java.util.Scanner;

public class TwentyNumbersV3 {

    public static void main(String[] args)

    {
        Scanner in = new Scanner (System.in);

        int num = 0, sum, ones, tens;

        System.out.println("Enter 2 digit numbers:");
        num = in.nextInt();

        while(num!=-1)
        {
            ones = num%10;
            tens = num/10;
            sum = ones + tens;
            if(ones==tens)
            {
                num = in.nextInt();
            }
            else
            {
            System.out.printf("%d ", sum);
            num = in.nextInt();
            }
        }

        in.close();
    }

}