text: #include <pthread.h>
  #include <stdio.h>
  
  void *hello_thread (void *arg)
  {
  printf ("Thread: Hello, World!\n");
  return arg;
  }
  int main()
  {
  pthread_t tid;
  int status;
  /* 쓰레드 생성 */
  status = pthread_create (&tid, NULL, hello_thread, NULL);
  if (status != 0)
  perror ("Create thread");
  pthread_exit (NULL);
  }
  