scan.txt

词法分析

   1: int main( void ){
	1: reserved word: int
	1: ID, name= main
	1: (
	1: reserved word: void
	1: )
	1: {
   2:   int a
	2: reserved word: int
	2: ID, name= a
   3:   return 0;
	3: reserved word: return
	3: NUM, val= 0
	3: ;
   4: }
	4: }
	5: EOF