Multithreading Timer and I/O in Console C++

Question

I'm developing a game that has a word falling to the bottom of the screen and the user typing that word before it hits the bottom. So you'll be able to type input while the word is falling. Right now I have a timer that waits 5 seconds, prints the word, runs timer again, clears the screen, and prints the word down 10 units.

int main()
{
  for (int i = 0; i < 6; i++)
   {
    movexy(x, y);
    cout << "hello\n";
    y = y + 10;
    wordTimer();
   }
}

Very basic I know. Which is why I thought multithreading would be a good idea so that way I could have the word falling while I still type input at the bottom. This is my attempt at that so far:

vector<std::thread> threads;

for (int i = 0; i < 5; ++i) {
    threads.push_back(std::thread(task1, "hello\n"));
    threads.push_back(std::thread(wordTimer));
}

for (auto& thread : threads) {
    thread.join();
}

However this only prints hello 4 times to the screen, then prints 55, then prints hello again, then counts-down 3 more times. So any advice on how to correctly do this? I've already done research. Just a few of the links I checked out that didn't help:

Multithreaded console I/O

C++11 Multithreading: Display to console

Render Buffer on Screen in Windows

Threading console application in c++

Create new console from console app? C++

Console output from thread

https://msdn.microsoft.com/en-us/library/975t8ks0.aspx?f=255&MSPPError=-2147217396

http://www.tutorialspoint.com/cplusplus/cpp_multithreading.htm

EDIT: Here is wordTimer()

int wordTimer()
{
    _timeb start_time;
    _timeb current_time;

    _ftime_s(&start_time);
    int i = 5;
    for (; i > 0; i--)
    {
        cout << i << endl;

        current_time = start_time;
        while (elapsed_ms(&start_time, &current_time) < 1000)
        {
            _ftime_s(&current_time);
        }

        start_time = current_time;
    }
    cout << " 5 seconds have passed." << endl;
    return 0;
}

this is also necessary for wordTimer()

unsigned int elapsed_ms(_timeb* start, _timeb* end)
{
    return (end->millitm - start->millitm) + 1000 * (end->time - start->time);
}

and task1

void task1(string msg)
{
    movexy(x, y);
    cout << msg;
    y = y + 10;
}

and void movexy(int x, int y)

void movexy(int column, int line)
{
    COORD coord;
    coord.X = column;
    coord.Y = line;
    SetConsoleCursorPosition(
        GetStdHandle(STD_OUTPUT_HANDLE),
        coord
        );
}

Answer 1

Threads do not run in any particular order - the operating system can schedule them whenever it feels like it. Your code starts ten threads - five that print "Hello", and five that count down. So the most likely outcome is that your program will try to print "Hello" five times at the same time, and also count down five times at the same time.

If you want to do things in a particular order, don't do them all in separate threads. Just have one thread that does the things in the right order.