C语言 词法分析答:词法分析是编译原理的一部分,主要分析词的组成的,我是这样认为的,就比如,你的这个例子,你的词法分析完成后,可将 -3.14 34 + (8 - 45 + 3 )+ 9 3.4 这些都分别的找到,然后才能运算啊,要不,你知道怎么去运算,当然,这个,我个人认为,要是做的话,采用栈做比较好,像数据结构那样,一个数字栈...
编译原理语法分析器程序设计,用C语言或C++,哪里有这个程序答:我写好的.scan.h / scan.h ccompiler Created by on 09-10-12.Copyright 2009 __MyCompanyName__. All rights reserved./ ifndef _SCAN_H_define _SCAN_H_include <string> include <fstream> using namespace std;typedef enum { ENDFILE,ERROR,ELSE,IF,INT,RETURN,VOID,WHILE,ID,NUM,ASS...
编译原理词法分析程序答:include <iostream> include <ctype.h> include <fstream> include <string.h> include <malloc.h> using namespace std;ifstream fp("source.txt",ios::in);char cbuffer;char *key[13]={"if","else","for","while","do","return","break","continue","int","void","main","const"...