图书管理系统.doc

#include #include #include #include using namespace std; const int Maxr=100;const int Maxb=100;const int Maxbor=5;class Reader private: int tag; int no; char name10;int borbookMaxbor; public: Reader() char *getname() return name; int gettag() return tag; int getno() return no; void setname(char na) strcpy(name,na); void delbook() tag=1; void addreader(int n,char *na) tag=0; no=n; strcpy(name,na); for(int i=0;iMaxbor;i+) borbooki=0; void borrowbook(int bookid) for(int i=0;iMaxbor;i+) if (borbooki=0) borbooki=bookid; return; int retbook(int bookid) for(int i=0;iMaxbor;i+) if(borbooki=bookid) borbooki=0; return 1; return 0; void disp() cout setw(5) no setw(10) name借书编号：; for(int i=0;iMaxbor;i+) if(borbooki!=0) cout borbooki |; cout endl; ; class RDatabase private: int top; Reader readMaxr;public: RDatabase() Reader s; top=-1; fstream file(reader.txt,ios:in); while (1) file.read(char *)&s,sizeof(s); if (!file)break; top+; readtop=s; file.close(); void clear() top=-1; int addreader(int n,char *na) Reader *p=query(n); if (p=NULL) top+; readtop.addreader(n,na); return 1; return 0; Reader *query(int readerid) for (int i=0;i=top;i+) if (readi.getno()=readerid & readi.gettag()=0) return &readi; return NULL; void disp() for (int i=0;i=top;i+) readi.disp(); void readerdata();RDatabase() fstream file(reader.txt,ios:out); for (int i=0;i=top;i+) if (readi.gettag()=0) file.write(char *)&readi,sizeof(readi); file.close(); ; void RDatabase:readerdata() char choice; char rname20; int readerid; Reader *r; while (choice!=0) cout nnttt读 者 维 护nnntt 1 新 增nntt 2 更 改nntt 3 删 除nntt 4 查 找nntt 5 显 示nntt 6 全 删nntt 0 退 出 choice; switch (choice) case 1: cout readerid; cout rname; addreader (readerid,rname); break; case 2: cout readerid; r=query(readerid); if (r=NULL) cout 该读者不存在 endl; break; cout rname; r-setname(rname); break; case 3: cout readerid; r=query(readerid); if (r=NULL) cout 该读者不存在 delbook(); break; case 4: cout readerid; r=query(readerid); if (r=NULL) cout 该读者不存在disp(); break; case 5: disp(); break; case 6: clear(); break; default:cout输入错误，请从新输入：;break; class Book private: int tag;int no;char name20;int onshelf; public: Book() char *getname() return name; int getno() return no; int gettag() return tag; void setname(char na) strcpy(name,na); void delbook() tag=1; void addbook(int n,char *na) tag=0; no=n; strcpy(name,na); onshelf=1; int borrowbook() if (onshelf=1) onshelf=0; return 1; return 0; void retbook() onshelf=1; void disp() cout setw(6) no setw(18) name setw(10) (onshelf=1? 在架:已借) endl; ; class BDatabase private: int top; Book bookMaxb; public: BDatabase() Book b; top=-1; fstream file(book.txt,ios:in); while (1) file.read(char *)&b,sizeof(b); if (!file) break; top+; booktop=b; file.close(); void clear() top=-1; int addbook(int n,char *na) Book *p=query(n); if (NULL=p) top+; booktop.addbook(n,na); return 1; return 0; Book *query(int bookid) for (int i=0;i=top;i+) if (booki.getno()=bookid &booki.gettag()=0) return &booki; return NULL; void bookdata();void disp() for (int i=0;i=top;i+) if (booki.gettag()=0) booki.disp(); BDatabase() fstream file(book.txt,ios:out); for (int i=0;i=top;i+) if (booki.gettag()=0) file.write(char *)&booki,sizeof(booki); file.close(); ; void BDatabase:bookdata() char choice; char bname40; int bookid; Book *b; while (choice!=0) cout nnnttt图 书 维 护 endlendl; couttt1 新 增n tt2 更 改ntt3 删 除ntt4 查 找ntt5 显 示ntt6 全 删ntt0 退 出 choice; switch (choice) case 1: cout 输入图书编号: bookid; cout 输入图书书名: bname; addbook(bookid,bname); break; case 2: cout 输入图书编号: bookid; b=query(bookid); if (b=NULL) cout 该图书不存在 endl; break; cout 输入新的书名: bname; b-setname(bname); break; case 3: cout 读入图书编号: bookid; b=query(bookid); if (b=NULL) cout 该图书不存在 delbook(); break; case 4: cout 读入图书编号: bookid; b=query(bookid); if (b=NULL) cout 该图书不存在disp(); break; case 5: disp(); break; case 6: clear(); break; default:cout输入错误，请从新输入:; void main() char choice; int bookid,readerid; RDatabase ReaderDB; Reader *r; BDatabase BookDB; Book *b; while(choice!=0) cout endlendlttt 图 书 管 理 系 统nnn; cout ttt1 借 书nnttt2 还 书 nnttt3 图 书 维 护nnttt4 读 者 维 护nnttt0 离 开 choice; switch (choice) case 1: cout readerid; cout bookid; r=ReaderDB.query(readerid);if (NULL=r) cout 不存在该读者，不能借书 endl; break; b=BookDB.query(bookid); if (b=NULL) cout 不存在该图书，不能借书borrowbook()=0) cout 该图书已借出，不能借书borrowbook(b-getno(); break; case 2: coutreaderid; cout bookid; r=ReaderDB.query(readerid); i