charlie charlie c++

#include <iostream>
#include <cstdlib>

using namespace std;

int booled_string (string word)
// edited the hash code by http://stackoverflow.com/users/779920/nick
{       int sum = 0;
        for (int k = 0; k < word.length(); k++)
            sum = sum + int(word[k]);
        return  sum % 2;
}

int main()
{
    string seed;
    int answer;
    while (seed != "stop")
    {
        getline(cin, seed);
        answer = booled_string(seed);
        if (answer)
        {
            cout << "yes" << endl;
        }
        else
        {
            // if you type "stop" it lets out a creepy "no" b4 it closes i love it
            cout << "no" << endl;
        }
    }
    return 0;
}