tsglxt.c

图书馆管理系统

#include<iostream.h> 
#include<fstream.H> 
#include<stdlib.h> 
#include<string.h> 
struct bookData 
{ 
int booknumber; 
char bookname[30]; 
int store; 
}; 
struct Person 
{ 
char name[20]; 
char studynumber[10]; 
int count; 
bookData Rbook[2]; 
//bookData Rbook; 
}; 
class History 
{ 
public: 
History(fstream& a){readerbook=a;} 
void writehistory(); 
void readhistory(fstream&); 
private: 
fstream readerbook; 
}; 
class Liberian; 

void Find(fstream&); 
void CreateTxt(fstream&); 

class Reader 
{ 
friend Liberian; 
public: 
Reader(fstream&); 
void print(); 
void handlebook(fstream&); 
void change(); 
bool findreader(); 
void Addreader(); 
void deletereader(); 
private: 

fstream file; 
Person person; 

}; 
class Liberian 
{ 
public: 
Liberian(char *,char *); 
void changeReader(Reader&); 
void selfprint(); 
void Append(fstream&); 
private: 
char workname[20]; 
char worknumber[20]; 
}; 


int main() 
{ 
fstream bookRecord(" book.dat",ios::in| ios::out); 
if(!bookRecord) 
{ 
cerr<<" Can't open,try again!"<<endl; 
exit(1); 
} 
fstream readerRecord("reader.dat",ios::in|ios::out); 
if(!readerRecord) 
{ 
cerr<<" Can't open,try again!"<<endl; 
exit(1); 
} 


int choice; 
int key; Reader reader(readerRecord);//读者管理系统 
Liberian liberian("李天","123456");//图书管理员 
History rec(readerRecord);//声明显示历史记录类 
while(1) 
{ 
cout<<" 请输入您的选择:\n\n" 
<<"1--图书管理员\n" 
<<"2--读者系统\n" 
<<"0--结束程序\n"; 
cin>>choice; 
switch(choice) 
{ 
case 1: 

{ 
cout<<" Hello,图书管理员:\n"; 
liberian.selfprint();cout<<endl; 
cout<<"1-- 增加新图书\n" 
<<"2-- 改变读者的属性\n" 
<<"3-- 显示历史记录\n" 
<<"0-- 返回\n"; 
cin>>key; 

switch(key) 
{ 
case 1: 
liberian.Append(bookRecord); 
break; 
case 2: 
liberian.changeReader(reader); 
break; 
case 3: 
rec.readhistory(readerRecord); 
case 0: 
break ; 
} 
} 
break; 
case 2: 
{ 
cout<<"学生读者\n"; int iflag=1; 

//reader.findreader(); 
cout<<"1-- 借书与还书信息\n" 
<<"2-- 修改个人信息\n" 
<<"0-- 返回\n"; 

cin>>key; 
switch(key) 
{ 
case 1: 
reader.handlebook(bookRecord); 
break; 
case 2: 
reader.change(); 
break; 
case 0: 
break; 
} 
} 
break; 
default: 
return 0; 
} 
} 



return 0; 
} 
//增加书籍 
void Liberian::Append(fstream& storef) 
{ 
bookData book; 
int choice; 
int key; 
int num; 
storef.seekp(0,ios::end); 
int posEnd=storef.tellp(); 
cout<<"*************书籍入库***************"<<endl; 
while(1) 
{ 
cout<<" Please enter your choice:"<<endl; 
cout<<"1--添加新书\n"<<"2--已有书籍\n"<<"0--返回\n"; 
cin>>choice; 
switch(choice) 
{ 
case 1: 
cout<<" 书号, 书名, 数量?"<<endl; 
cin>>book.booknumber>>book.bookname>>book.store; 
storef.write(reinterpret_cast<char*>(&book),sizeof(bookData)); 
break; 
case 2: 
storef.seekg(0,ios::beg); 
cout<<"Booknumber?\n"; 
cin>>key; 
do{ 
storef.read(reinterpret_cast<char*>(&book),sizeof(bookData)); 
}while(book.booknumber!=key&&storef.tellg()!=posEnd); 

if(book.booknumber==key) 
{ 
cout<<book.booknumber<<"----"<<book.bookname<<"----"<<book.store<<endl; 
cout<<" 输入已有书增加的数量："<<endl; 
cin>>num; 

if(num>0) 
book.store+=num; 
else 
{ 
cout<<" Invalid input"<<endl; 
} 

storef.seekp(-long(sizeof(bookData)),ios::cur);//////////////////// 
storef.write(reinterpret_cast<char*>(&book),sizeof(bookData)); 
cout<<"现在书籍： "<<book.bookname<<" 余量为： "<<book.store<<endl; 
} 
else 
cout<<"找不到此书，请重新查阅书号是否正确!"<<endl; 
break; 
case 0: 
return ; 
} 
} 
} 

//书籍查询 

void Find(fstream & f) 
{ 
bookData book; 
int key; 
int choice; 
f.seekg(0,ios::end); 
int posEnd=f.tellp(); 

cout<<"*************书籍查询***************"<<endl; 
while(1) 
{ 
cout<<" 请输入您的选择\n" 
<<" 1-- 检索一本书\n" 
<<"2-- 显示全部书籍\n" 
<<"0-- 返回\n"; 
cin>>choice; 
switch(choice) 
{ 
case 1: 
f.seekg(0,ios::beg); 
cout<<"输入你想检索书的书号"<<endl; 
cin>>key; 
do{ 
f.read(reinterpret_cast<char*>(&book),sizeof(bookData)); 
}while(book.booknumber!=key&&f.tellg()!=posEnd); 
if(book.booknumber==key) 
cout<<book.booknumber<<"---"<<book.bookname<<"---"<<book.store<<endl; 
else 
cout<<"找不到此书，请重新确认！"<<endl; 
break; 
case 2: 
f.seekg(0,ios::beg); 
do{ 
f.read(reinterpret_cast<char*>(&book),sizeof(bookData)); 
cout<<book.booknumber<<"---"<<book.bookname<<"--"<<book.store<<endl; 
}while(f.tellg()!=posEnd); 
break; 
case 0: 
return ; 
} 
} 
} 

Reader::Reader(fstream& c) 
{ 

file=c; 
Person person={"0","0",0,{{0,"0",0}, {0,"0",0}}}; 
} 

void Reader::print() 
{ 
cout<<"Name"<<"---"<<person.name<<'\n\n'<<"studynumber---"<<person.studynumber<<'\n'; 
} 


//操作书籍?????????????????????? 
void Reader::handlebook(fstream &filee) 
{ 

int key; int choice; 

bookData book; bool iflag;int num=0; 
filee.seekp(0,ios::end); 
int posEnd=filee.tellp(); 
while(!(iflag=findreader())) 
{ 
num++; 
if(num>=3) 
return; 
} 
//cout<<person.name; 
while(1) 
{ 

cout<<"1-- 借书\n" 
<<"2-- 还书\n" 
<<"3-- 查找一本书\n" 
<<"0-- 返回"<<'\n'; 
cin>>choice; 
switch(choice) 
{ 

case 1: 
{ 
filee.seekp(0,ios::end); 
int posEnd=filee.tellp(); 
if(person.count<=1) 
{ 
cout<<" 输入你要借阅图书的书号："<<endl; 
cin>>key; 
filee.seekg(0); 
do{ 
filee.read(reinterpret_cast<char*>(&book),sizeof(bookData)); 
}while(book.booknumber!=key&&filee.tellp()!=posEnd); 
//cout<<book.booknumber<<endl; 
if(book.booknumber==key) 
{ 
//cout<<" 找到你想借阅的图书，成功借阅！"<<endl; 

if(book.store>0) 
{ 
person.Rbook[person.count]=book; 
person.count+=1; 
book.store-=1; 
filee.seekp(-long(sizeof(bookData)),ios::cur); 
filee.write(reinterpret_cast<char*>(&book),sizeof(bookData)); 
cout<<" 找到你想借阅的图书，成功借阅！"<<endl; 
cout<<"书籍 :"<<book.bookname<<"剩余的本数为:"<<book.store<<endl; 

} 
else 
cout<<" 现在此图书已经被借完了，请耐心等待几天!"<<endl; 

} 
else 
cout<<" 找不到你想要的图书"<<endl; 

} 
else 
cout<<"你最多只能借2本\n\n"; 

} 

break; 


case 2: 
{ 
bookData blankbook={0,"0",0}; 
//if(person.count>0) 
//{ 
int iflag=0; 
filee.seekg(0); 
cout<<" 输入你想要还的书的书号："<<endl; 
cin>>key; 
for(int i=0;i<2;i++) 
{ 
if(key==person.Rbook[i].booknumber) 
{ 
person.Rbook[i]=blankbook; 
cout<<"成功归还此书!"; 
iflag=1; 
person.count--; 

do{ 
filee.read(reinterpret_cast<char*>(&book),sizeof(bookData)); 
}while(book.booknumber!=key&&filee.tellp()!=posEnd); 

if(book.booknumber==key) 
{ 

book.store+=1; 
filee.seekp(-long(sizeof(bookData)),ios::cur); 
filee.write(reinterpret_cast<char*>(&book),sizeof(bookData)); 
cout<<"书籍 :"<<book.bookname<<"余本量为： "<<book.store<<endl; 
} 

} 


} 

if(!iflag) 
{ 
cout<<" 你没有借阅那本书，请确认！"<<endl; 
} 
// } 
// else 
// cout<<"你没有借书,请重新确认！\n\n"; 

} 
break; 
case 3: 
Find(filee); 
break; 
case 0: 
return; 
} 
} 
} 


void Reader::change() 
{ 
char newname[20]; char newnumber[10]; 
int choice; 
file.seekp(0,ios::cur); 
int Posend=file.tellp(); bool iflag;int num=0; 
while(!(iflag=findreader())) 
{ 
num++; 
if(num>=3) 
return; 
} 
cout<<" 请输入你的选择!"<<endl; 
cout<<"1--改变名字!\n" 
<<"2--修改学号r\n" 
<<"0--返回\n"; 
cin>>choice; 
switch(choice) 
{ 
case 1: 
cout<<"输入你的新名字!\n"; 
cin>>newname; 
strcpy(person.name,newname); 
break; 
case 2: 
cout<<"输入你的信学号?\n"; 
cin>>newnumber; 
strcpy(person.studynumber,newnumber); 
break; 
default: 
break;; 
} 
file.seekp(-long(sizeof(Person)),ios::cur); 
file.write(reinterpret_cast<char*>(&person),sizeof(Person)); 
cout<<"信息修改成功！"<<endl; 
} 

void Liberian::selfprint() 
{ 
cout<<" 图书管理员 :\n" 
<<worknumber<<"---"<<workname<<" 为您服务!\n"; 
} 
Liberian::Liberian(char *a,char*b) 
{ 
strcpy(workname,a); 
strcpy(worknumber,b); 
} 

void Liberian::changeReader(Reader& a) 
{ 
int choice; char newname[20];char newnumber[10]; 
cout<<"修改读者的数据信息!\n"; 

cout<<"1-- 增加一个读者\n" 
<<"2-- 删除一个读者\n" 
<<"0-- 结束程序\n"; 
cin>>choice; 
switch(choice) 
{ 
case 1: 
a.Addreader(); 
break; 
case 2: 
a.deletereader(); 
break; 
case 0: 
return; 
} 
} 

void Reader::Addreader() 
{ 
Person temp;bookData book={0,"0",0}; 
file.seekp(0,ios::end); 
int Posend=file.tellp(); 
cout<<"输入你想要增加的读者的名字"<<endl; 
cin>>temp.name; 
cout<<"新读者的学号:"<<endl; 
cin>>temp.studynumber; 
temp.Rbook[1]=book; temp.Rbook[0]=book; temp.count=0; 
file.write(reinterpret_cast<char*>(&temp),sizeof(Person)); 
cout<<" 成功添加！"<<temp.name<<endl; 
} 
void Reader::deletereader() 
{ 
file.seekp(0,ios::end); 
int Posend=file.tellp(); 
Person person; 
char name[20]; 
cout<<"输入要删除的读者的名字!"<<endl; 
cin>>name; 
file.seekg(0); 
do{ 
file.read(reinterpret_cast<char*>(&person),sizeof(Person)); 
}while(strcmp(name,person.name)&&file.tellp()!=Posend); 
if(!strcmp(name,person.name)) 
{ 
bookData blankbook={0,"0",0}; 
Person guest={"0","0",0,{{0,"0",0},{0,"0",0}}}; 

file.seekp(-long(sizeof(Person)),ios::cur); 
file.write(reinterpret_cast<char*>(&guest),sizeof(Person)); 
cout<<"成功删除！"<<person.name<<endl; 
} 
else 
cout<<"查无此人!"<<endl; 
} 
bool Reader::findreader() 
{ 
file.seekp(0,ios::end); 
int Posend=file.tellp(); 
char name[20]; 

Person guest={"0","0",0,{{0,"0",0},{0,"0",0}}}; 
cout<<"输入查找人的名字!"; 
cin>>name; 
file.seekg(0); 
do{ 
file.read(reinterpret_cast<char*>(&person),sizeof(Person)); 
}while(strcmp(name,person.name)&&file.tellp()!=Posend); 
if(!strcmp(name,person.name)) 
{ 
cout<<"查到此人："<<person.name<<endl; 
return true; 
} 
else 
{ 
cout<<"找不到此人，请重新确认！"<<endl; 
return false; 
} 


} 
//借阅历史 
void History::readhistory(fstream& a) 
{ 
readerbook=a; 
char name[10]="0"; 
readerbook.seekp(0,ios::end); 
int Posend=readerbook.tellp(); 
Person guest; int iflag=1; 
cout<<" 书籍借阅信息如下："<<endl; 
cout<<"姓名 学号 借书量 书籍名"<<endl; 
readerbook.seekg(0,ios::beg); 
do{ 
readerbook.read(reinterpret_cast<char*>(&guest),sizeof(Person)); 
if(strcmp(guest.Rbook[1].bookname,name) || strcmp(guest.Rbook[1].bookname,name)) 
{ 
cout<<guest.name<<" "<<guest.studynumber<<" "<<guest.count<<" "; 
for(int i=0;i<2;i++) 
if(strcmp(guest.Rbook[i].bookname,name)) 
cout<<guest.Rbook[i].bookname; 
iflag=0; 
} 

}while(readerbook.tellp()!=Posend); 
if(iflag) 
cout<<"没有读者借阅图书！"<<endl; 

}