编译原理 (4) 词法分析答:词法分析是程序编译过程中的首要步骤,其目标是将源代码的字符序列转化为一系列可识别的元素,如标识符、常量等。这些元素通常表示为二元组,例如:const pi = 3.14159; 分析为:(id, E), (assign_op, =>, id, M), (mult_op, *), (id, C), (exp_op, **), (number, 2)词法分析器...
编译原理课程设计-词法分析器设计(C语言)答:char prog[80]={'\0'},token[8]; /*存放构成单词符号的字符串*/ char ch;int syn, /*存放单词字符的种别码*/ n,sum, /*存放整数型单词*/ m,p; /*p是缓冲区prog的指针,m是token的指针*/ char *rwtab[6]={"begin","if","then","while","do","end"};void scan...