output.txt

这个是编译原理的词法分析的实验报告！很不错

ID a 3 1
OPERATOR = 3 2
NUM 10 3 3
DELIMITER ; 3 4
ID b 4 1
OPERATOR = 4 2
NUM 20 4 3
DELIMITER ; 4 4
WHILE while 5 1 
DELIMITER ( 5 2
ID a 5 3
DELIMITER ) 5 4
DELIMITER { 6 1
IF if 7 1 
DELIMITER ( 7 2
ID a 7 3
OPERATOR < 7 4
ID b 7 5
DELIMITER ) 7 6
THEN then 8 1 
ID a 8 2
OPERATOR = 8 3
ID a 8 4
OPERATOR - 8 5
NUM 1 8 6
DELIMITER ; 8 7
ELSE else 9 1 
ID b 10 1
OPERATOR = 10 2
ID b 10 3
OPERATOR + 10 4
NUM 1 10 5
DELIMITER ; 10 6
DELIMITER } 11 1