#include?
#include?


//recorder?

enum?state?{?s_stop?s_play?s_forward?s_backward?s_pause?s_record??};
enum?message?{?play?stop?forward?backward?record?pause?};


void?state_change（enum?message?m）
{
?static?enum?state?s=s_stop;
?switch?（s）
?{
	case?s_play:
????	if（m==stop）
???????{
			s?=?s_stop;
		????printf（“stop.\n“）;????????
???????}
???????else?if?（m==pause）
???????{
????????????s?=?s_pause;
			printf（“pause“）;
???????}
???????break;
	case?s_pause:
		if（m==pause）
		{
			s?=?s_play;
			printf（“play.\n“）;????????
		}
		else?if（m==stop）
		{
			s?=?s_stop;
			printf（“stop.\n“）;????????
		}
		break;
????case?s_stop:
		if（m==play）
		{
			s?=?s_play;
			printf（“play.\n“）;????????
		}
		if（m==backward）
		{
			s?=?s_backward;
			printf（“backward.\n“）;????????
		}
		if（m==forward）
		{
			s?=?s_forward;
			printf（“forward.\n“）;????????
		}
		if（m==record）
		{
			s?=?s_record;
			printf（“record.\n“）;??????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????1884??2014-06-21?00:10??state.c
?????文件?????????487??2014-06-29?19:47??state.dot
?????文件???????36578??2014-06-29?19:52??state.jpg
?????文件????????3236??2014-06-21?00:09??state_engine.c
?????文件???????????8??2014-06-21?00:09??test.in