UFO Project in C++

Here is my code for the UFO Project in C++

ufo.cpp

#include <iostream>
#include "ufo_functions.hpp"

int main() {

  char play_again;

  do
  {
    srand(time(NULL));
    greet();
    std::vector<std::string> codewords = {"codecademy", "school", "nintendo", "coding", "programming", "cplusplus"};
    std::string codeword = codewords[rand() % codewords.size()];
    std::string answer;
    int misses = 0;

    std::vector<char> incorrect;
    bool guess = false;

    char letter;
    

    for (int l = 0; l < codeword.size(); l++)
    {
      answer += "_";
    }

    while (answer != codeword && misses < 7)
    {
      display_misses(misses);

      display_status(incorrect, answer);

      std::cout << "\n\nPlease enter your guess: ";
      std::cin >> letter;
      letter = tolower(letter);

      for (int k = 0; k < codeword.size(); k++)
      {
        if (letter == codeword[k])
        {
          answer[k] = letter;
          guess = true;
        }
      }

      if (guess)
      {
        std::cout << "Correct!\n\n";
      }
      else
      {
        std::cout << "Incorrect! The tractor beam pulls the person in further.\n\n";
        incorrect.push_back(letter);
        misses++;
      }
      
      guess = false;
      
    }

    end_game(answer, codeword);

    std::cout << "Would you like to play again?\n\nType y for yes and n for no\n\n";
    std::cin >> play_again;
    play_again = tolower(play_again);
    std::cout << "\n\n";
  } while(play_again == 'y');

  
}

ufo_functions.hpp

#include <vector>

void display_misses(int misses);

// Declare functions
void greet();
void end_game(std::string answer, std::string codeword);
void display_status(std::vector<char> incorrect, std::string answer);

ufo_functions.cpp

#include <iostream>
#include <vector>

// Define functions
void greet()
{
  std::cout << "=============\n";
  std::cout << "UFO: The Game\n";
  std::cout << "=============\n";
  std::cout << "Instructions: save your friend from alien abduction by \n";
  std::cout << "guessing the letters in the codeword.\n";
}

void end_game(std::string answer, std::string codeword)
{
  if (answer == codeword)
  {
    std::cout << "Hooray! You saved the person and earned a medal of honor!\n\n";
    std::cout << "The codeword is " << codeword << "\n\n";
  }
  else
  {
    std::cout << "Oh no! The UFO just flew away with another person!\n\n";
    std::cout << "The codeword was " << codeword << "\n\n";
  }
}

void display_status(std::vector<char> incorrect, std::string answer)
{
  std::cout << "\nIncorrect Guesses\n\n";

    for (int i = 0; i < incorrect.size(); i++)
    {
      std::cout << incorrect[i] << ' ';
    }

    std::cout << "\nCodeword:\n\n";
    
    for (int j = 0; j < answer.size(); j++)
    {
      std::cout << answer[j] << ' ';
    }
}



void display_misses(int misses) {

  if (misses == 0 || misses == 1) {

    std::cout << "                 .                            \n";
    std::cout << "                 |                            \n";
    std::cout << "              .-\"^\"-.                       \n";
    std::cout << "             /_....._\\                       \n";
    std::cout << "         .-\"`         `\"-.                  \n";
    std::cout << "        (  ooo  ooo  ooo  )                   \n";
    std::cout << "         '-.,_________,.-'    ,-----------.   \n";
    std::cout << "              /     \\        (  Send help! ) \n";
    std::cout << "             /   0   \\      / `-----------'  \n";
    std::cout << "            /  --|--  \\    /                 \n";
    std::cout << "           /     |     \\                     \n";
    std::cout << "          /     / \\     \\                   \n";
    std::cout << "         /               \\                   \n";

  }
  else if (misses == 2) {

    std::cout << "                 .                            \n";
    std::cout << "                 |                            \n";
    std::cout << "              .-\"^\"-.                       \n";
    std::cout << "             /_....._\\                       \n";
    std::cout << "         .-\"`         `\"-.                  \n";
    std::cout << "        (  ooo  ooo  ooo  )                   \n";
    std::cout << "         '-.,_________,.-'    ,-----------.   \n";
    std::cout << "              /  0  \\        (  Send help! ) \n";
    std::cout << "             / --|-- \\      / `-----------'  \n";
    std::cout << "            /    |    \\    /                 \n";
    std::cout << "           /    / \\    \\                    \n";
    std::cout << "          /             \\                    \n";
    std::cout << "         /               \\                   \n";

  }
 
  else if (misses == 3) {

    std::cout << "                 .                            \n";
    std::cout << "                 |                            \n";
    std::cout << "              .-\"^\"-.                       \n";
    std::cout << "             /_....._\\                       \n";
    std::cout << "         .-\"`         `\"-.                  \n";
    std::cout << "        (  ooo  ooo  ooo  )                   \n";
    std::cout << "         '-.,_________,.-'    ,-----------.   \n";
    std::cout << "              /--|--\\        (  Send help! ) \n";
    std::cout << "             /   |   \\      / `-----------'  \n";
    std::cout << "            /   / \\   \\    /                \n";
    std::cout << "           /           \\                     \n";
    std::cout << "          /             \\                    \n";
    std::cout << "         /               \\                   \n";

  }
  else if (misses == 4) {

    std::cout << "                 .                            \n";
    std::cout << "                 |                            \n";
    std::cout << "              .-\"^\"-.                       \n";
    std::cout << "             /_....._\\                       \n";
    std::cout << "         .-\"`         `\"-.                  \n";
    std::cout << "        (  ooo  ooo  ooo  )                   \n";
    std::cout << "         '-.,_________,.-'    ,-----------.   \n";
    std::cout << "              /  |  \\        (  Send help! ) \n";
    std::cout << "             /  / \\  \\      / `-----------' \n";
    std::cout << "            /         \\    /                 \n";
    std::cout << "           /           \\                     \n";
    std::cout << "          /             \\                    \n";
    std::cout << "         /               \\                   \n";

  }
  else if (misses == 5) {

    std::cout << "                 .                            \n";
    std::cout << "                 |                            \n";
    std::cout << "              .-\"^\"-.                       \n";
    std::cout << "             /_....._\\                       \n";
    std::cout << "         .-\"`         `\"-.                  \n";
    std::cout << "        (  ooo  ooo  ooo  )                   \n";
    std::cout << "         '-.,_________,.-'    ,-----------.   \n";
    std::cout << "              / / \\ \\        (  Send help! )\n";
    std::cout << "             /       \\      / `-----------'  \n";
    std::cout << "            /         \\    /                 \n";
    std::cout << "           /           \\                     \n";
    std::cout << "          /             \\                    \n";
    std::cout << "         /               \\                   \n";

  }
  else if (misses == 6) {

    std::cout << "                 .                            \n";
    std::cout << "                 |                            \n";
    std::cout << "              .-\"^\"-.                       \n";
    std::cout << "             /_....._\\                       \n";
    std::cout << "         .-\"`         `\"-.                  \n";
    std::cout << "        (  ooo  ooo  ooo  )                   \n";
    std::cout << "         '-.,_________,.-'    ,-----------.   \n";
    std::cout << "              /     \\        (  Send help! ) \n";
    std::cout << "             /       \\      / `-----------'  \n";
    std::cout << "            /         \\    /                 \n";
    std::cout << "           /           \\                     \n";
    std::cout << "          /             \\                    \n";
    std::cout << "         /               \\                   \n";

  }

}