/*
Marty Stepp, CSE 142
This program prompts for words until the word "quit" is typed,
then prints the total number of letters that were typed.
It is an example of a sentinel loop, which is a subcategory
of fencepost problems.
*/

import java.util.*;   // for Scanner

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

    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);
        
        // all variable(s) in your while loop test
        // MUST be declared before/outside the while loop
        
        // fencepost problem: pull first post out
        int count = 0;
        System.out.print("Type a word (or \"" + SENTINEL + "\" to exit): ");
        String word = console.next();
        
        while (!word.equals(SENTINEL)) {
            count += word.length();   // wire

            // post
            System.out.print("Type a word (or \"" + SENTINEL + "\" to exit): ");
            word = console.next();
        }
        
        System.out.println("You typed " + count + " characters.");
    }
}