1、/圖書管理系統#include#include#include#includeusingnamespacestd;constintMaxb=10000;/最多的圖書classBook/圖書類inttag;/刪除標記1:已刪0:未刪intno;/圖書編號charname20;/書名charauthor10;/作者名charno210;/輸入分類號chardan20;/輸入出版單位chartime20;/出版時間intprice;/價格public:Book()char*getname()returnname;獲取姓名intgetno()returnno;/獲取圖書編號intgettag()ret

2、urntag;/獲取刪除標記char*getauthor()returnauthor;/獲取作者名char*getno2()returnno2;/獲取分類號char*getdan()returndan;/獲取出版單位char*gettime()returntime;/獲取出版時間chargetprice()returnprice;/獲取圖書價格voidsetname(charna)/設置書名strcpy(name,na);voidsetauthor(charau)/設置作者名strcpy(author,au);voidsetno2(charn口)設置分類號strcpy(no2,n);voids

3、etdan(chard)/設置出版單位strcpy(dan,d);voidsettime(chart)/設置出版時間strcpy(time,t);voiddelbook()tag=1;/刪除圖書voidaddbook(intn,char*na,char*au,char*n2,char*da,char*ti,intpr)/tag=0;no=n;增加圖書price=pr;strcpy(name,na);strcpy(author,au);strcpy(no2,n2);strcpy(dan,da);strcpy(time,ti);voiddisp()/輸出圖書coutsetw(10)nosetw(1

4、0)namesetw(10)setw(10)authorsetw(10)no2setw(10)dansetw(10)timesetw(10)priceendl;classBDatabase/圖書庫類inttop;/圖書記錄指針BookbookMaxb;圖書記錄public:BDatabase()/構造函數，將book.txt讀至Ubook口中Bookb;top=-1;fstreamfile(book.txt,ios二in);while(1)(file.read(char*)&b,sizeof(b);if(!file)break;top+;booktop=b;file.close();v

5、oidclear()/全刪(top=-1;intaddbook(intn,char*na,char*au,char*n2,char*da,char*ti,intpr)增力口圖書(Book*p=query(n);if(p=NULL)(top+;booktop.addbook(n,na,au,n2,da,ti,pr);return1;return。；Book*query(intbookid)/查找圖書(for(inti=0;i=top;i+)if(booki.getno()=bookid&booki.gettag()=0)return&booki;returnNULL;Book*q

6、uery2(intbookid,char*name)/按書名查找圖書for(inti=0;i=top;i+)if(strcmp(booki.getname(),name)=0)bookid=booki.getno();return&booki;returnNULL;Book*query3(intbookid,char*author)/按作者查找圖書for(inti=0;i=top;i+)if(strcmp(booki.getauthor(),author)=0)bookid=booki.getno();return&booki;returnNULL;voidbookdata()

7、;/圖書庫維護voiddisp()coutsetw(10)圖書編號setw(10)圖書名字setw(10)圖書作者setw(10)圖書分類setw(10)出版單位setw(10)出版時間setw(10)價格endl;for(inti=0;i=top;i+)if(booki.gettag()=0)booki.disp();BDatabase()/析構函數，將book口寫入book.txt文件中fstreamfile(book.txt,ios二out);for(inti=0;i=top;i+)if(booki.gettag()=0)file.write(char*)&booki,sizeo

8、f(booki);file.close();voidBDatabase:bookdata()intchoice=1;intchoice2=1;intchoice3=1;intchoice4=1;charbname40;charbauthor10;charbno220;charbdan20;charbtime20;intbprice;intbookid;Book*b;while(choice!=0)coutendlendl;cout*1添加信息*endl;cout*2修改信息*endl;cout*3刪除信息*endl;cout*4信息查詢*endl;cout*5顯示信息*endl;cout*6全

9、部刪除*endl;cout*0退出*endl;coutendlchoice;/如果輸入的編號在菜單里不存在的情況-在for循環內部如果出現這樣的錯的時候while(choice!=1&choice!=2&choice!=3&choice!=4&choice!=5&choice!=6&choice!=0)coutendl*您輸入的編號在菜單里不存在，請重新輸入*aendlendl;coutchoice;switch(choice)case1:cout輸入圖書編號：”；cout*”endl;cout*”endlbookid;coutbname;cou

10、tbauthor;coutbno2;coutbdan;coutbtime;coutbprice;addbook(bookid,bname,bauthor,bno2,bdan,btime,bprice);cout圖書編號bookid添加成功；按任意鍵返回菜單break;case2:coutbookid;b=query(bookid);if(b=NULL)cout該圖書不存在endl;break;coutendlendl;cout*1書名*”endl;cout*2作者*”endl;cout*3分類號*endl;cout*4出版單位*endl;cout*5出版時間*endl;cout*0退出系統*e

11、ndl;coutchoice2;switch(choice2)case1:coutbname;b-setname(bname);break;case2:coutbauthor;b-setauthor(bauthor);break;case3:coutsetno2(bno2);cout*endl;cout*”endlendl;break;case4:coutbdan;b-setdan(bdan);break;case5:coutbtime;b-settime(btime);/修改出版時間break;break;case3:coutbookid;b=query(bookid);if(b=NULL)

12、cout該圖書不存在delbook();break;cout查找方式:endlchoice3;switch(choice3)case1:coutbookid;b=query(bookid);if(b=NULL)cout該圖書不存在disp();break;case2:coutbname;b=query2(bookid,bname);if(b=NULL)cout該圖書不存在??！disp();)break;case3:coutbauthor;b=query3(bookid,bauthor);if(b=NULL)cout該作者不存在！disp();)break;)break;case5:disp()

13、;break;case6:clear();break;coutendl謝謝您的支持！歡迎下次繼續使用endlendlendl;)；voidmain()system(color2f);coutendl;coutendl;cout請登錄!endl;coutendl;coutendl;intq=0,w=1001;number:inte;cout”請輸入賬號e;if(q=e)number1:intr;cout”請輸入密碼r;if(w=r)fstreamiofile;if(!iofile)(cout打開文件失??！endl;cout*”endl;cout*”endl;)system(cls);BDatabaseBookDB;Book*b;intnb;(coutendlendl;coutendl;coutendl;coutendl;co