import java.util.Scanner;


public class NumAdder {

  public static void main(String[] a) {

      Scanner sc = new Scanner(System.in);

      int i = 77;
      int sum = 0;

      while(i != 0) {     
         // ask for a number
         System.out.println("insert an integer:");
         i = sc.nextInt();
         sum += i;
      }

      System.out.println("Cool, the sum is " + sum);
 
  }

}