output.txt

编译器中词法分析部分

DFA最小化后的结果：
1 2 3 3 4 4 5 1 P
1 1 -1 -1 -1 -1 -1 1 I
-1 2 -1 -1 -1 -1 -1 1 N
-1 -1 -1 -1 4 -1 -1 1 P
-1 -1 -1 -1 -1 -1 5 1 B
-1 -1 -1 -1 -1 -1 -1 1 D

输出分词结果：
KEY  int
KEY  main
ERROR  occured at the 1th row.
ERROR  occured at the 1th row.
BOUND  {
KEY  int
ID  a
ERROR  occured at the 3th row.
NUM  23
OPER  +
NUM  5
PUNCTUATION  ;
KEY  return
NUM  0
PUNCTUATION  ;
BOUND  }