Multithreading bez čekanja

#include <windows.h>
#include <iostream>
#include <thread>
using namespace std;

int foo()
{
    for (int i = 0; i < 5; i++) {
        cout << "Thread " << i << endl;
        Sleep(500);
    }

    return 0;
}

int foo2()
{
    for (int i = 0; i < 5; i++) {
        cout << "Thread2 " << i << endl;
        Sleep(500);
    }

    return 0;
}

int main()
{
    cout << "Pocetak" << endl;
    Sleep(500);

    thread th1(foo);
    thread th2(foo2);

    int i = 0;
    while (i++ < 10) {
        cout << "Kraj " << i << endl;
        Sleep(500);
    }

    th1.detach();
    th2.detach();

    return 0;
}