// Sentinel loop that uses break keyword.

import java.util.*;

public class WordSum2 {
   public static final String SENTINEL = "quit";

   public static void main(String[] args) {
      Scanner console = new Scanner(System.in);
      int sum = 0;

      while (true) {
         String response = getLine(console);
         if (response.equals(SENTINEL)) {
            break;
         }         
         sum += response.length();
      }
      System.out.println("You typed a total of " + sum + " characters.");
   }

   public static String getLine(Scanner console) {
      System.out.print("Type a line (or \"" + SENTINEL + "\" to exit): ");
      return console.nextLine();
   }
}