编译原理实验词法分析器
实验：设计SAMPLE语言的词法分析器
检查要求：
a) 启动程序后，先输出作者姓名、班级、学号（可用汉语、英语或拼音）；
b) 请求输入测试程序名，键入程序名后自动开始词法分析并输出结果；
c) 输出结果为单词的二元式序列（样式见样板输出1和2）；
d) 要求能发现下列词法错误和指出错误性质和位置：
非法字符，即不是SAMPLE字符集的符号；
字符常数缺右边的单引号（字符常数要求左、右边用单引号界定，不能跨行）；
注释部分缺右边的界符*/（注释要求左右边分别用/*和*/界定，不能跨行）。
sample语言单词编码如下：
单 词 种别码 单 词 种别码 单 词 种别码
and 1 output 21 * 41
array 2 procedure 22 */ 42
begin 3 program 23 + 43
bool 4 read 24 , 44
call 5 real 25 - 45
case 6 repeat 26 . 46
char 7 set 27 .. 47
constant 8 stop 28 / 48
dim 9 then 29 /* 49
do 10 to 30 : 50
else 11 true 31 := 51
end 12 until 32 ; 52
false 13 var 33 < 53
for 14 while 34 <= 54
if 15 write 35 55
input 16 标识符 36 = 56
integer 17 整数 37 > 57
not 18 字符常数 38 >= 58
of 19 ( 39 [ 59
or 20 ) 40 ] 60
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资源详情
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