Project on Game using C++

#include <iostream>
 #include <cstdlib>
 #include<ctime>
 #include <string>
#include<conio.h>
 const int MAX_TRIES=5;
 int letterFill (char, string, string&);
void main ()
 {
 string name;
 char letter;
 int num_of_wrong_guesses=0;
 string word;
 string words[] =
 {
  "india",
  "pakistan",
  "nepal",
  "malaysia",
  "philippines",
  "australia",
  "iran",
  "ethiopia",
  "oman",
  "indonesia"
 };
 //choose and copy a word from array of words randomly
 srand(time(NULL));
 int n=rand()% 10;
 word=words[n];
  
 // Initialize the secret word with the * character.
 string unknown(word.length(),'*');
clrscr();
 // welcome the user
 cout << "\n\nWelcome to hangman...Guess a country Name";
 cout << "\n\nEach letter is represented by a star.";
 cout << "\n\nYou have to type only one letter in one try";
 cout << "\n\nYou have " << MAX_TRIES << " tries to try and guess the word.";
 cout << "\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~";
  
 // Loop until the guesses are used up
 while (num_of_wrong_guesses < MAX_TRIES)
 {
  cout << "\n\n" << unknown;
  cout << "\n\nGuess a letter: ";
  cin >> letter;
  // Fill secret word with letter if the guess is correct,
  // otherwise increment the number of wrong guesses.
  if (letterFill(letter, word, unknown)==0)
  {
   cout << endl << "Whoops! That letter isn't in there!" << endl;
   num_of_wrong_guesses++;
  }
  else
  {
   cout << endl << "You found a letter! Isn't that exciting!" << endl;
  }
  // Tell user how many guesses has left.
  cout << "You have " << MAX_TRIES - num_of_wrong_guesses;
  cout << " guesses left." << endl;
  // Check if user guessed the word.
  if (word==unknown)
  {
   cout << word << endl;
   cout << "Yeah! You got it!";
   break;
  }
 }
 if(num_of_wrong_guesses == MAX_TRIES)
 {
  cout << "\nSorry, you lose...you've been hanged." << endl;
  cout << "The word was : " << word << endl;
 }
 cin.ignore();
 cin.get();
 return 0;
 }
 /* Take a one character guess and the secret word, and fill in the
  unfinished guessword. Returns number of characters matched.
  Also, returns zero if the character is already guessed. */
 int letterFill (char guess, string secretword, string &guessword)
 {
 int i;
 int matches=0;
 int len=secretword.length();
 for (i = 0; i< len; i++)
 {
  // Did we already match this letter in a previous guess?
  if (guess == guessword[i])
   return 0;
  // Is the guess in the secret word?
  if (guess == secretword[i])
  {
   guessword[i] = guess;
   matches++;
  }
 }
 return matches;
 }
 Output:-