5.请指出下面代码的错误 int handle_message(int message_id) { int result = 0; switch (message_id) { case MSG_ID_NOTIFY: route_to_notify_thread (message_id); break; case MSG_ID_SHUTDOWN: case MSG_ID_REBOOT: LOGI("System Message %d =====\n", message_id) send_msg_to_sys_thread(message_id); break; default: LOGE ("===== Kaka Wrone Message %d =======\n", message_id) break; } return result;

下面代码的错误是缺少了每个 case 语句和 default 语句的结尾处的分号，导致编译时会报错。正确的代码如下：

int handle_message(int message_id) {
    int result = 0;
    switch (message_id) {
    case MSG_ID_NOTIFY:
        route_to_notify_thread (message_id);
        break;
    case MSG_ID_SHUTDOWN:
    case MSG_ID_REBOOT:
        LOGI("System Message %d =====\n", message_id);
        send_msg_to_sys_thread(message_id);
        break;
    default:
        LOGE ("===== Kaka Wrone Message %d =======\n", message_id);
        break;
    }
    return result;
}