Clock (using threads)

#include <iostream>
#include <thread>
#include <windows.h>
#include <stdio.h>
#include <conio.h>

using namespace std;

int counter_variable = 1;

void counting_function()
{
    while(1)
    {
        Sleep(1000);
        cout << "\r";
        cout << counter_variable;
        counter_variable++;
    }
}

int main()
{
    thread t1(counting_function); //execute thread

    int x;
    cin >> x;

    t1.join();

    return 0;
}