What is the output of this program? #include #include sem_t st; void *fun_t(void *arg); void *fun_t(void *arg) { pthread_exit("Bye"); } int main() { pthread_t pt; void *res_t; if(pthread_create(&pt,NULL,fun_t,NULL) == -1) perror("pthread_create"); if(sem_init(&st,1,2) != 0) perror("sem_init"); if(pthread_join(pt,&res_t) == -1) perror("pthread_join"); if(sem_destroy(&st) != 0) perror("sem_destroy"); return 0; }