词法分析器实验报告.docx

词法分析实验报告班级： 姓名： 学号： 实验要求可以识别每个单词符号，并以记号形式输出；识别注释统计字符，单词，行，列数等检查错误并报告位置发现错误修正并恢复程序自动机设计如手写图片。程序源代码//词法分析器 by程闻博 //以下保留字以及运算符取自《C语言核心技术》； //部分位运算符（ = =）未列入;//内存定位运算符 * 算作算数运算符;//char * keyword[34] = {auto, break, case, char, const, continue, default, do, double, else, enum, extern, float, for, goto, if, int, long, register, return, short, signed, sizeof, static, struct, switch, typedef, printf, union, unsigned, void, volatile, while, main};//保留字 //char * count_op[5] = {+, -, *, /, %};//算数运算符 //char * assignment_op[11] = {=, +=, -=, *=, /=, %=, =, ^=, |=};//赋值运算符 //char * self_op[2] = {++, --};//char * comparison_op[6] = {, =, , =, ==, !=};//比较运算符//char * logic_op[3] = {, ||, !};//逻辑运算符//char * bool_op[4] = {, |, ^, ~};//布尔位运算符//char * getmem_op[5] = {, ., -, [, ]};//内存定位运算符 //char * else_op[5] = {(, ), ?, :, ,};//其他运算符 //char * note[3] = {//, /*, */};//注释//char * sentence[3] = {;, {, }}//语句分割 #include stdio.h #include stdlib.h #include string.h#include ctype.h #include vectorusing namespace std;FILE *fp, *fpo;//文件指针 char curr;//读入的字符 int line, row;char temp[1000];int i = 0;int total_words, total_word;struct err{int line;int row;int mode;};typedef struct err err;vectorerr err_list;struct id_save{int times;char contain[1000];struct id_save* next;};typedef struct id_save* id_savePtr;id_savePtr id_list;void id_count(){int k;for(id_savePtr curr = id_list; curr-next != NULL; curr = curr-next){int flag = 1;for(k = 0; temp[k] != \0; k++){if(curr-contain[k] != temp[k]){flag = 0;break;}}if(flag == 1 curr-contain[k] == \0){curr-times++;return; }}id_savePtr curr2 = new(id_save);curr2-times = 1;for(k = 0; temp[k] != \0; k++){curr2-contain[k] = temp[k];}curr2-contain[k] = \0;curr2-next = id_list-next;id_list-next = curr2;}void output_id_list(){int j = 1;printf(id 统计\n);if(id_list-next != NULL)for(id_savePtr curr = id_list-next; curr-next != NULL; curr = curr-next){printf(NO.%d:%-30s%-30d \n, j, curr-contain, curr-times);j++;}}void bugreport(int reason){err temp;temp.line = line;t