C++源代碼單詞掃描程序

C++源代碼單詞掃描程序C++源代碼單詞掃描程序C++源代碼單詞掃描程序xxx公司C++源代碼單詞掃描程序文件編號(hào)：文件日期：修訂次數(shù)：第1.0次更改批準(zhǔn)審核制定方案設(shè)計(jì)，管理制度院 系：計(jì)算機(jī)學(xué)院實(shí)驗(yàn)課程:編譯原理實(shí)驗(yàn)實(shí)驗(yàn)項(xiàng)目：C++源代碼單詞掃描程序（詞法分析）指導(dǎo)老師：黃煜廉實(shí)驗(yàn)項(xiàng)目C++源代碼單詞掃描程序（詞法分析）實(shí)驗(yàn)要求C++源代碼掃描程序識(shí)別C++記號(hào)。C++語言包含了幾種類型的記號(hào)：標(biāo)識(shí)符，關(guān)鍵字，數(shù)（包括整數(shù)、浮點(diǎn)數(shù)），字符串、注釋、特殊符號(hào)（分界符）和運(yùn)算符號(hào)等。打開一個(gè)C++源文件，打印出所有以上的記號(hào)。要求應(yīng)用程序應(yīng)為Windows界面。選作部分：為了提高C++源程序的可讀性，C++程序在書寫過程中加入了空行、空格、縮進(jìn)、注釋等。假設(shè)你想犧牲可讀性，以節(jié)省磁盤空間，那么你可以存貯一個(gè)刪除了所有不必要空格和注釋的C++源程序的壓縮文本。因此，程序中還應(yīng)該有這樣的壓縮功能。選作部分：進(jìn)一步思考或?qū)崿F(xiàn)——如何進(jìn)一步實(shí)現(xiàn)減小源文件大小的壓縮功能。應(yīng)該書寫完善的軟件文檔。需求分析根據(jù)所需的功能程序應(yīng)分為分析關(guān)鍵字、分析標(biāo)識(shí)符、分析數(shù)字、分析串、分析注釋、分析特殊字符和過濾多余字符幾部分。關(guān)鍵字有.gotoincludeforbreakcaseifstructclass等。過濾字符要考慮到空格和換行。實(shí)驗(yàn)代碼#include<>#include<>#include<>#include<>#include<>FILE*fp;charstring(charc[]);,"(",")","{","}","&&","||","!","()",">>"};char*keyword[35]={"","include","break","case","char","const","continue","default","do","double","else","enum","cin","float","for","goto","if","int","long","cout","return","short","signed","sizeof","static","struct","switch","typedef","printf","union","unsigned","void","volatile","while","main"};intsearch(charsearchstr[],inttype) { letter[++i]=ch; ch=fgetc(fp); } letter[i+1]='\0'; if(search(letter,1)) { cout<<letter<<""<<"關(guān)鍵字"<<endl; } else { cout<<letter<<""<<"標(biāo)識(shí)符"<<endl; } return(ch);}charnumber(charch)//數(shù)字處理{ inti=-1; charnum[20]; while(isdigit(ch)!=0) { num[++i]=ch; ch=fgetc(fp); } if(isalpha(ch)!=0) { while(!isspace(ch)) { num[++i]=ch;ch=fgetc(fp); } num[i+1]='\0'; cout<<num<<""<<"錯(cuò)誤！"<<endl; gotoloop; } num[i+1]='\0'; cout<<num<<""<<"數(shù)字"<<endl;loop:return(ch);}charother(charch){ inti=-1; charother[1000]; if(isspace(ch))//是空格 { ch=fgetc(fp); gotoloop; } while((!isspace(ch))&&(!isalnum(ch)))//不是空格且不是字母或數(shù)字 { other[++i]=ch; ch=fgetc(fp);//若是字母，不是空格的判斷沒有寫出來 } other[i+1]='\0'; if(search(other,2)) cout<<other<<""<<"算數(shù)運(yùn)算符"<<endl; else if(search(other,3)) cout<<other<<""<<"特殊符號(hào)"<<endl; else if(search(other,4)) cout<<other<<""<<"注釋符"<<endl;loop:return(ch);}charstring(charc[])//字符串{ inti=0;//charch; charstri[100]; stri[i]=c[0]; ch=fgetc(fp); while(ch!='"') { stri[++i]=ch; ch=fgetc(fp); } stri[++i]=ch; stri[++i]='\0'; cout<<stri<<""<<"字符串"<<endl; return(ch);}intmain(){charstr,c;cout<<"Pleaseenterafilename："; charFileName[100]; cin>>FileName; fp=fopen(FileName,"r"); if(fp==NULL) { cout<<"Unabletoopenfile!"<<endl; return0; } else { cout<<"Openthefilesuccessfully!"<<endl; cout<<fp<<endl; str=fgetc(fp); while(str!=EOF) { if(isalpha(str)) str=letter(str); else { if(isdigit(str))