Thread

using namespace std;
void threadrun(string threadname) {
    for (int i = 0; i < 10; i++) {
        cout << threadname << " " << i << endl;
        i++;
    }
}
void threadrun2(string threadname2) {
    for (int i = 1; i < 10; i++) {
        cout << threadname2 << " " << i << endl;
        i++;
    }
}
int main() {
    setlocale(LC_ALL, "rus");
    srand(time(NULL));
    thread threadA(threadrun, "threadA");
    thread threadB(threadrun, "threadB");
    thread threadC(threadrun2, "threadC");
    thread threadD(threadrun2, "threadD");

    threadA.join();
    threadB.join();
    threadC.join();
    threadD.join();

    return 0;
}