Doubt regarding the pthread_exit

doubt_thread_exit

int main(int argc, char *argv[])
{
    int i=1;
    void *output;

    pthread_t thread;
    int status = pthread_create(&thread,
                                NULL,
                                server,
                                (void*)i);
    pthread_exit(0);
    return(0);

}

void* server(void *param)
{
    printf("Print Server\n");
    printf("------%d\n", (int)param);
    return (void*)100;
}