#include
#include
#include
#include
#include
using?namespace?std;
/*在輸出文件save.txt中，相應(yīng)數(shù)字意義如下
關(guān)鍵字--1
標(biāo)示符--2
數(shù)字--3
界限符--4
運(yùn)算符--5
錯(cuò)誤--0
*/
void?alpha（ifstream?&?infileofstream?&?outfilechar?s）;
int?punct（ifstream?&?infileofstream?&?outfilechar?sbool?nocout）;
void?digit（ifstream?&?infileofstream?&?outfilechar?s）;
void?cifa（）;

int?cmpoper（string?astring?b）;
int?main（）
{
	cifa（）;

	system（“pause“）;
	return?0;
}

void?cifa（）//此法分析子程序
{
	ifstream?infile;
	ofstream?outfile;
	char?s;
	infile.open（“biaodashi.txt“）;
	outfile.open（“save.txt“ofstream::out）;
	while（!infile.eof（））
	{
		infile.read（&ssizeof（char））;
		if（infile.eof（））break;
		while（isspace（s））//是空格就讀下一個(gè)
			infile.read（&ssizeof（char））;
		if（isalpha（s）?||?s==‘_‘）?alpha（infileoutfiles）;//是字母就調(diào)用關(guān)鍵字或標(biāo)識(shí)符子程序
		else?if（isdigit（s））?digit（infileoutfiles）;//是數(shù)字就調(diào)用數(shù)字分析子程序
		else?if（ispunct（s））?punct（infileoutfiles0）;//是符號(hào)就調(diào)用界限符或運(yùn)算符子程序
		else?{cout<	}
	infile.close（）;
	outfile.close（）;
}


void?alpha（ifstream?&?infileofstream?&?outfilechar?s）
{
	char?buff[40];
	int?i=0;
	bool?label=truenocout=true;
	char?*?key[]={“include““iostream““using““namespace““std““int““main““cout““return“};
	int?n=9;
	while（?!isspace（s）?）//如果下一個(gè)字符不是空格或其他符號(hào)就把字母或數(shù)字或下劃線讀入數(shù)字儲(chǔ)存起來
	{
		if（punct（infileoutfilesnocout）==0?||?punct（infileoutfilesnocout）==1）?{infile.seekg（-1ios_base::cur）;break;}
		if（?!（（s==‘_‘）?||?（isalpha（s）?）?||?（isdigit（s）?））?）?label=false;
		cout<		outfile<		buff[i]=s;
		i=i+1;
		infile.read（&ssizeof（char））;
	}
	if（label==false）?{cout<<“	wrongA“<	else
	{//把讀取的字符串與關(guān)鍵字比較，判斷其是關(guān)鍵字還是標(biāo)識(shí)符
		buff[i]=‘\0‘;
		for（i=0;i		{
			if（strcmp（buffkey[i]）==0）?{cout<<“	關(guān)鍵字“<			else?label=false;
		}
		if（label==false）?{cout<<“	標(biāo)識(shí)符“<	}
}

int?punct（ifstream?&?infileofstream?&?outfilechar?sbool?nocout）
{//界限符判斷
	int?in=8;
	char?bound[]={‘“‘‘{‘??‘}‘??‘‘??‘;‘??‘<‘??‘>‘??‘\‘‘};
	for（i=0;i	{
		if（s==bound[i]）
			if?（nocout）?return?0;
			else?{cout<	}
	if（i	
	else?if（i==0）
	{
		infile.read（&ssizeof（char））;//若連著兩個(gè)‘“‘則輸出第二個(gè)‘“‘后退出本函數(shù)
		if（s==‘“‘）?{cout<		else?infile.seekg（-1ios_base::cur）;

			while（（!infile.eof（）））//判斷字符串
			{
				infile.read（&ssizeof（char））;
				if（s!=‘“‘）?cout<				else?
				{
					cout<<“	字符串“<					outfile<<“	6“<					break;
				}
			}
		cout<		outfile<	}
//運(yùn)算符判斷
	int?m=9;
	char?operat[]={?‘=‘??‘+‘??‘-‘??‘*‘??‘/‘??‘#‘??‘（‘??‘）‘?‘.‘};
	for（i=0;i	{
		if（s==operat[i]）
			if?（nocout）?return?1;
			else?{cout<	}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件?????????22??2009-05-20?15:52??taoeryuyi60\biaodashi.txt

?????文件????????201??2009-05-18?10:14??taoeryuyi60\compile.txt

?????文件?????585781??2009-06-15?21:08??taoeryuyi60\Debug\taoeryuyi60.exe

?????文件?????843944??2009-06-15?21:08??taoeryuyi60\Debug\taoeryuyi60.ilk

?????文件????2547872??2009-06-15?21:08??taoeryuyi60\Debug\taoeryuyi60.pch

?????文件????1197056??2009-06-15?21:08??taoeryuyi60\Debug\taoeryuyi60.pdb

?????文件?????132096??2009-06-15?21:08??taoeryuyi60\Debug\vc60.idb

?????文件?????118784??2009-06-15?21:08??taoeryuyi60\Debug\vc60.pdb

?????文件?????297266??2009-06-15?21:08??taoeryuyi60\Debug\yuyi.obj

?????文件????????110??2009-06-15?21:08??taoeryuyi60\save.txt

?????文件???????4337??2009-05-20?15:21??taoeryuyi60\taoeryuyi60.dsp

?????文件????????530??2009-05-20?14:45??taoeryuyi60\taoeryuyi60.dsw

?????文件??????50176??2009-06-15?21:08??taoeryuyi60\taoeryuyi60.ncb

?????文件??????53760??2009-06-15?21:08??taoeryuyi60\taoeryuyi60.opt

?????文件????????903??2009-06-15?21:08??taoeryuyi60\taoeryuyi60.plg

?????文件???????3923??2009-06-16?16:31??taoeryuyi60\yuyi.cpp

?????文件?????????15??2009-06-15?21:08??taoeryuyi60\yuyi.txt

?????文件??????28672??2009-06-24?00:47??編譯課設(shè)_FINAL_報(bào)告\任務(wù)書.doc

?????文件?????401408??2009-06-24?00:47??編譯課設(shè)_FINAL_報(bào)告\編譯課程設(shè)計(jì)報(bào)告_劉濤.doc

?????文件??????98816??2009-06-24?00:48??編譯課設(shè)_FINAL_報(bào)告\課程設(shè)計(jì)封面.doc

?????目錄??????????0??2009-07-04?16:09??taoeryuyi60\Debug

?????目錄??????????0??2009-07-04?16:09??taoeryuyi60

?????目錄??????????0??2009-07-04?16:09??編譯課設(shè)_FINAL_報(bào)告

-----------?---------??----------?-----??----

??????????????6365672????????????????????23