#include<iostream.h>#include<string.h>#include<ctype.h>#include<stdio.h>#include<conio.h>charstring(charc[]); charletter(charch); charnumber(charch); charother(charch); intsearch(charsearchstr[],inttype); FILE*fp; charstring(charc[]); charch; ","typedef",//數(shù)據(jù)類型中的關(guān)鍵字 "while","for","goto","Loop","cin","cout",

char*note[3]={"http://","/*","*/"};voidmain { { //判斷文件是否{ while{if{if{}}}return}}}}charnumber(char{charstring(charinti=-char{whileinti=0{char}while{{{}}returngoto}}charletter(char {

loop:return(ch);}inti=-charwhile(isalnum(ch)||ch=='.') {}if{ }

charother(char {inti=-charif //{gotoloop;}whileisspace(ch))&&(!isalnum(ch{ }if if

{}return1;}

if "<<"注釋符

}loop:return}intsearch(charsearchstr[],inttype) {intswitch{case{

return}《編譯原理》試卷一、正則表達(dá)式→DFA15請(qǐng)寫出實(shí)驗(yàn)一有關(guān)C語(yǔ)言詞法分析中整數(shù)的正則表達(dá)式及相應(yīng)的DFA。 請(qǐng)寫出實(shí)驗(yàn)一有關(guān)C語(yǔ)言詞法分析中整數(shù)的詞法分析程}case

return1;

三、自頂向下分析設(shè)計(jì)題15分 在P116表4-3statement→if-stmt|other{return1;}case3:{

if-stmt→if(exp)statementelse-partelse-part→elsestatement|εexp→0|1四、LR分析題20分 請(qǐng)畫(huà)出下面文法的LR(1)分析表：S→id|V:=EV→idE→V|nreturn五、語(yǔ)義分析題20}if（A&&B）if（X<Y||C>D）F=1；elseF=0；elsecase六、綜合分析設(shè)計(jì)10分又如表達(dá)式(a-b-c)*(c-d)#，則結(jié)果為：a*c-a*d-b*c-

1、實(shí)驗(yàn)一是對(duì)C/C++語(yǔ)言進(jìn)行詞法分析,C語(yǔ)言注解/**/的詞法分析代碼段.(代碼段可以用C/C++/JAVA進(jìn)行描述,也可以只畫(huà)出/**/的DFA圖)詞法分析：/**/SWITCH'/':{

{}elsegoto}el