aaaa.txt

编译原理语义分析代码

{	{
int	int
ID	a
;	;
int	int
ID	b
;	;
read	read
ID	a
;	;
write	write
ID	a
;	;
if	if
(	(
ID	a
==	==
NUM	10
)	)
ID	b
=	=
NUM	1
;	;
else	else
ID	b
=	=
NUM	2
;	;
while	while
(	(
ID	a
>	>
NUM	0
)	)
{	{
ID	a
=	=
ID	a
-	-
NUM	1
;	;
ID	b
=	=
ID	b
+	+
NUM	1
;	;
}	}
write	write
ID	b
;	;
do	do
{	{
ID	b
=	=
ID	b
+	+
NUM	1
;	;
}	}
while	while
(	(
ID	b
<	<
NUM	10
)	)
ID	b
=	=
NUM	0
;	;
for	for
(	(
ID	a
=	=
NUM	0
;	;
ID	a
<	<
NUM	5
;	;
ID	a
=	=
ID	a
+	+
NUM	1
)	)
ID	b
=	=
NUM	4
;	;
write	write
ID	b
;	;
}	}