typeracer game(incomplete v2)

#include "pch.h"
#include <iostream>
#include <thread>
#include <windows.h>
#include <string>
#include <conio.h> //Gain access to getch()

using namespace std;

//Typeracer game
double timer = 0;
bool end_game = false;
int errors;
int error_words;
int temporary_errors = 0;

void hellothere()
{
    while (!end_game)
    {
        if (timer == 30)
        {
            end_game = true;
            system("cls");
        }
        Sleep(1000);
        timer++;
    }
}

char word[5];
char input_from_player[5];

void intitialize_word()
{
    srand(time(NULL));
    for (int x = 0; x < 5; x++)
    {
        word[x] = (rand() % 25) + 97;
    }
}

int main()
{
    double points = 0;

    thread clock(hellothere);

    while (!end_game)
    {
        intitialize_word();
        cout << word << endl;

        for (int k = 0; k < 5; k++)
        {
            if (k > 0)
                cout << word[k - 1];

            while (input_from_player[k] != word[k])
            {
                input_from_player[k] = _getch();
                if (input_from_player[k] != word[k])
                {
                    errors++;
                    temporary_errors = 1;
                }
            }
        }

        if (temporary_errors == 1)
        {
            error_words++;
            temporary_errors = 0;
        }

        points++;

        if (points == 10)
        {
            end_game = true;
        }

        system("cls");
    }

    clock.join(); //End time

    double words_per_minute = (points/timer) * 60;

    cout << "You typed 10 words over a period of " << timer << " seconds" << endl;
    cout << "This estimates to " << words_per_minute << " words per minute." << endl;
    cout << "Number of erros: " << errors << endl;
    cout << "Number of words messed up on: " << error_words;

    int pause; cin >> pause; //Pause the game
}