Twenty Numbers V2

// Shavit Borisov
// CW

import java.util.Scanner;

public class TwentyNumbersV2 {

    public static void main(String[] args)

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

        int num, sum;

        System.out.println("Enter 2 digit numbers:");

        for(;;)
        {
            num = in.nextInt();
            if(num==-1)
                break;
            sum = num%10 + num/10;
            System.out.printf("%d ", sum);
        }

        in.close();
    }

}