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How many variables does this program have

Coolcattan (3)
im not to sure if identified them correctly

but Im counting 15

am I wrong?
Im just a beginner and this is a book problem 
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#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <ctime>
#include <cctype>

using namespace std;

string THE_WORD;            // word to guess
int wrong;
string soFar;
string used;

bool match(char letter, string word);
char askGuess(string usedLettersStr); //tells the compiler of method askGuess
bool playAgain();

int main()
{
    srand(time(0));

    vector<string> words;  // collection of possible words to guess
    words.push_back("GUESS");
    words.push_back("HANGMAN");
    words.push_back("DIFFICULT");
    words.push_back("BOOK");
    words.push_back("DIGITAL");
    words.push_back("PROGRAM");

    cout << "Welcome to Hangman.  Good luck!\n";

 // loop starts here
 bool done = false;
 do
 {
    const int MAX_WRONG = 8;  // maximum number of incorrect guesses allowed

    random_shuffle(words.begin(), words.end());
    THE_WORD = words[0];            // word to guess

    soFar = string(THE_WORD.size(), '-');          // word guessed so far
    used = "";                            // letters already guessed

    // loop for current word
    while ((wrong < MAX_WRONG) && (soFar != THE_WORD))
    {
        cout << "\n\nYou have " << (MAX_WRONG - wrong) << " incorrect guesses left.\n";
        cout << "\nYou've used the following letters:\n" << used << endl;
        cout << "\nSo far, the word is:\n" << soFar << endl;

        used += askGuess(used);



    } // end of while ((wrong < MAX_WRONG) && (soFar != THE_WORD))

    // shut down
    if (wrong == MAX_WRONG)
    {
      cout << "\nYou've been hanged!";
    }

    cout << "\nThe word was " << THE_WORD << endl;

} while(playAgain());

return 0;
}

inline bool match(char letter, string word)
{
       return ( word.find(letter) != string::npos );
}

char askGuess(string usedLettersStr)
{
        char guess;
        cout << "\n\nEnter your guess: ";
        cin >> guess;
        guess = toupper(guess); //make uppercase since secret word in uppercase
//        while (used.find(guess) != string::npos)
        while (match(guess, used))
        {
            cout << "\nYou've already guessed " << guess << endl;
            cout << "Enter your guess: ";
            cin >> guess;
            guess = toupper(guess);
        }


//        if (THE_WORD.find(guess) != string::npos)
        if (match(guess, THE_WORD))
        {
            cout << "That's right! " << guess << " is in the word.\n";

            // update soFar to include newly guessed letter
            for (int i = 0; i < THE_WORD.length(); ++i)
                if (THE_WORD[i] == guess)
                    soFar[i] = guess;
        }
        else
        {
            cout << "Sorry, " << guess << " isn't in the word.\n";
            ++wrong;
        }
}

bool playAgain() // function to play again while clearing system
{
     char again;
     cout << "\n\nWould you like to play again? <y/n>: ";
     cin >> again;

     cin.clear(); //clear and ignore cin
     cin.ignore();

     again = toupper(again);

     system("cls");

     return (again == 'Y');
}
cire (8284)
There are 12.

The "variable" names in a function declaration are just placeholders; only the type is needed. So, don't count letter, word or usedLettersStr on lines 15 and 16. Those lines could be rewritten like so:

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bool match(char, string);
char askGuess(string); //tells the compiler of method askGuess
Coolcattan (3)
Oh okay thank you so much!

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