int callThread()
{
    //create 2 thread objects
    pthread_t t1, t2;
    //create 2 string msg
    string tN1 = "A new life have been born!!!";
    string tN2 = "A second life have been born!!!";
    //create 2 thread msg
    string * tM1 = &tN1;
    string * tM2 = &tN2;
    //create thread 1
    if(pthread_create(&t1, NULL, thread_func, tM1) != 0)
    {
        return EXIT_FAILURE;
    }
    //if not EXIT_FAILURE
    else
    {
        cout << tN1 << endl;
    }
    //create thread 2
    if(pthread_create(&t2, NULL, thread_func, tM2) != 0)
    {
        return EXIT_FAILURE;
    }
    //if not EXIT_FAILURE
    else
    {
        cout << tN2 << endl;
    }
    //Block thread 1 until thread 2 stop
    if(pthread_join(t1, NULL) != 0)
    {
        return EXIT_FAILURE;
    }
    //Block thread 2 until thread 1 stop
    if(pthread_join(t2, NULL) != 0)
    {
        return EXIT_FAILURE;
    }
    
    return EXIT_SUCCESS;
}

    const std::string THREAD_NAMES []    = {"POOH", "TIGGER", "ROO", "GOLPHER", "KANGA", "LUMPY", "OWL", "RABBIT", "PIGLET",
                                           "POOH0", "TIGGER0", "ROO0", "GOLPHER0", "KANGA0", "LUMPY0", "OWL0", "RABBIT0", "PIGLET0",
                                           "POOH1", "TIGGER1", "ROO1", "GOLPHER1", "KANGA1", "LUMPY1", "OWL1", "RABBIT1", "PIGLET1",
                                           "POOH2", "TIGGER2", "ROO2", "GOLPHER2", "KANGA2", "LUMPY2", "OWL2", "RABBIT2", "PIGLET2",
                                           "POOH3", "TIGGER3", "ROO3", "GOLPHER3", "KANGA3", "LUMPY3", "OWL3", "RABBIT3", "PIGLET3",
                                           "POOH4", "TIGGER4", "ROO4", "GOLPHER4", "KANGA4", "LUMPY4", "OWL4", "RABBIT4", "PIGLET4",
                                           "POOH5", "TIGGER5", "ROO5", "GOLPHER5", "KANGA5", "LUMPY5", "OWL5", "RABBIT5", "PIGLET5"
                                          };