library management system simulation(last)

//*************************************************************
//     retrieve_system.h implemention file--retrieve_system.cpp
//**************************************************************     
#ifndef RETRIEVE_SYSTEM_H_
#define RETRIEVE_SYSTEM_H_
#include"book_tree.h"
#include"book_exception.h"
class retrieveSys
{
	public:
		retrieveSys();
		void retrieve(const bookTree &treePtr)const throw(bookException);

};
#endif

//*************************************************************
// retrieve_system.cpp inquiring the books' information
//************************************************************** 
#include"retrieve_system.h"
#include<cstdlib>
retrieveSys::retrieveSys()
{
}
void retrieveSys::retrieve(const bookTree &treePtr)const throw(bookException)
{
	char ch;
	system("cls");
	cout<<"********************************************************************************"<<endl;
	cout<<"********************************************************************************\n"<<endl;
        cout<<"**********              Please select retrieving manner               **********\n"<<endl;
	cout<<"**********                    T or t  for Title                       **********"<<endl;
	cout<<"**********                    A or a  for Author                      **********"<<endl;
	cout<<"**********                    I or i  for ISBN                        **********"<<endl;
	cout<<"**********                    P or p  for Publisher                   **********"<<endl;
	cout<<"**********                    C or c  for category                    **********"<<endl;
	cout<<"**********                    Q or q  for Quit                        **********\n"<<endl;
	cout<<"********************************************************************************"<<endl;
	cout<<"********************************************************************************"<<endl;
	cout<<"\t\t\tretrieving manner :";
	cin>>ch;
	while(cin.get()!='\n')
		;
	cout<<endl;
	while(ch!='Q'&&ch!='q')
	{
		if(ch=='T'||ch=='t')
		{
			cout<<"\t\t\tenter the book's title :";
			string _title;
			getline(cin,_title);
			treePtr.search(_title,ch);
		
		}
	        else if(ch=='A'||ch=='a')
		{
			cout<<"\t\t\tenter the book's author :";
			string _title;
			getline(cin,_title);
		
			treePtr.search(_title,ch);
		
		}
		else if(ch=='I'||ch=='i')
		{
			cout<<"\t\t\tenter the book's ISBN :";
			string _title;
			getline(cin,_title);

			treePtr.search(_title,ch);
		
		}
		else if(ch=='P'||ch=='p')
		{
			cout<<"\t\t\tenter the book's publisher :";
			string _title;
			getline(cin,_title);
		
			treePtr.search(_title,ch);
		}
		else if(ch=='C'||ch=='c')
		{
			cout<<"\t\t\tenter the book's category :";
			string _title;
			getline(cin,_title);
			treePtr.search(_title,ch);
		
		}
		else
			cout<<"\t\t\tyou should input a right manner !"<<endl;
		while(cin.get()!='\n')
			;
                system("pause");
	        system("cls");      
        	cout<<"********************************************************************************"<<endl;
         	cout<<"********************************************************************************\n"<<endl;
                 cout<<"**********              Please select retrieving manner               **********\n"<<endl;
            	cout<<"**********                    T or t  for Title                       **********"<<endl;
         	cout<<"**********                    A or a  for Author                      **********"<<endl;
          	cout<<"**********                    I or i  for ISBN                        **********"<<endl;
         	cout<<"**********                    P or p  for Publisher                   **********"<<endl;
         	cout<<"**********                    C or c  for category                    **********"<<endl;
          	cout<<"**********                    Q or q  for Quit                        **********\n"<<endl;
          	cout<<"********************************************************************************"<<endl;
         	cout<<"********************************************************************************"<<endl;
        	cout<<"\t\t\tretrieving manner :";
        	cin>>ch;
        	while(cin.get()!='\n')
        		;
        	cout<<endl;
	}

}

//*********************************************************************
//  return_system.h implemention file--reuturn_system.cpp
//********************************************************************  
#ifndef RETURN_SYSTEM_H_
#define RETURN_SYSTEM_H_
#include<string>
#include<fstream>
#include<iostream>
#include"book_tree.h"
#include"customer_tree.h"
using namespace std;
class returnSys
{
	private:
		string name;
		string password;
	public:
		returnSys();
		void createAccount();
		string getName()const;
		string getPassword()const;
		void setPassword(const string &_password);
		void revert(bookTree &btree,customerTree &ctree)
			throw(bookException,customerException);
		friend ofstream &operator<<(ofstream &fout,const returnSys &_sys);
		friend ifstream &operator>>(ifstream &fin,returnSys &_sys);

};
#endif

//**************************************************************** // return_sytem.cpp managing returning books task //**************************************************************** #include"return_system.h" #include<cstdlib> returnSys::returnSys() { name=""; password=""; } void returnSys::createAccount() { cout<<"\t\t Create a new returning Admin account "<<endl; cout<<"\n\t\t\tenter Admin's name :"; getline(cin,name); cout<<endl; bool isok=false; string _password; while(!isok) { cout<<"\t\t\tenter Admin's password :"; getline(cin,_password); cout<<"\n\t\t\tenter Admin's password again :"; getline(cin,password); if(password!=_password) { cout<<"\t\t\t\a\a\aenter the password wrong !enter once more "<<endl; } else isok=true; } cout<<"\n\t\t\tcreat new Admin account success !"<<endl; } string returnSys::getName()const { return name; } string returnSys::getPassword()const { return password; } void returnSys::setPassword(const string &_password) { password=_password; } ofstream &operator<<(ofstream &fout,const returnSys &_sys) { fout<<_sys.name<<'~'<<_sys.password<<'~'<<endl; return fout; } ifstream &operator>>(ifstream &fin,returnSys &_sys) { getline(fin,_sys.name,'~'); getline(fin,_sys.password,'~'); while(fin.get()!='\n') ; return fin; } void returnSys::revert(bookTree &btree,customerTree &ctree) throw(bookException ,customerException) { system("cls"); cout<<"********************************************************************************\n"<<endl; cout<<"\t\t\tenter Admin's name :"; string _name; getline(cin,_name); cout<<"\t\t\tenter Admin's password :"; string _password; getline(cin,_password); cout<<endl; if(_name==name&&_password==password) { cout<<"\t\t\t\tlogin success !"<<endl; cout<<"********************************************************************************"<<endl; bool cb=false; char ch; while(!cb) { cout<<"\t\t\tenter the book's ISBN :"; string _isbn; getline(cin,_isbn); try{ string _ID=btree.search(_isbn).getCustID(); try{ customerItem &citem =ctree.search(_ID); citem.display(); citem.revert(_isbn); cout<<"\t\t\t return the book success ! "<<endl; cout<<"\t is somebody continue( Y for continue and N for Exit):"; cin>>ch; while(cin.get()!='\n') ; if(ch=='Y'||ch=='y') cb=false; else cb=true; }catch(customerException &cexcept) { throw; } }catch(bookException &bexcept) { throw; } catch(customerException &cexcept) { throw; } } } else cout<<"\t\t name or password is wrong .Login failed !"<<endl; }

//*******************************************************************
//  borrow_system.h  implemention file--borrow_system.cpp
//*******************************************************************
#ifndef BORROW_SYSTEM_H_
#define BORROW_SYSTEM_H_
#include<string>
#include<iostream>
#include<fstream>
#include"book_tree.h"
#include"customer_tree.h"
using namespace std;
class borrowSys
{
	private:
		string name;
		string password;
	public:
		borrowSys();
		void createAccount();
		string getName()const;
		string getPassword()const;
		void setPassword(const string &_password);
		void borrow(bookTree &btree,customerTree &ctree)
			throw(bookException,customerException);
		friend ofstream &operator<<(ofstream &fout,const borrowSys &_sys);
		friend ifstream &operator>>(ifstream &fin,borrowSys &_sys);
};
#endif

//*************************************************************** // borrow_system.cpp managing borrowing books task //***************************************************************** #include"borrow_system.h" #include"book_tree.h" #include"book_item.h" #include"customer_item.h" #include"customer_tree.h" #include<cstdlib> borrowSys::borrowSys() { name=""; password=""; } void borrowSys::createAccount() { cout<<"\t\t Create a new borrowing Admin account "<<endl<<endl; cout<<"\t\t\tenter Admin's name :"; getline(cin,name); cout<<endl; bool isok=false; string _password; while(!isok) { cout<<"\t\t\tenter Admin's password :"; getline(cin,_password); cout<<"\n\t\t\tenter Admin's password again :"; getline(cin,password); if(password!=_password) { cout<<" \t\t\a\a\aenter the password wrong ! enter once more "<<endl; } else isok=true; } cout<<"\n\t\t\tcreat new Admin account success !"<<endl; } string borrowSys::getName()const { return name; } string borrowSys::getPassword()const { return password; } void borrowSys::setPassword(const string &_password) { password=_password; } ofstream &operator<<(ofstream &fout,const borrowSys &_sys) { fout<<_sys.name<<'~'<<_sys.password<<'~'<<endl; return fout; } ifstream &operator>>(ifstream &fin,borrowSys &_sys) { getline(fin,_sys.name,'~'); getline(fin,_sys.password,'~'); while(fin.get()!='\n') ; return fin; } void borrowSys::borrow(bookTree &btree,customerTree &ctree) throw(bookException,customerException) { system("cls"); cout<<"********************************************************************************\n"<<endl; cout<<"\t\t\tenter Admin's name :"; string _name; getline(cin,_name); cout<<"\n\t\t\tenter Admin's password :"; string _password; getline(cin,_password); cout<<endl; if(_name==name&&_password==password) { cout<<"\t\t\t\tlogin success !"<<endl; cout<<"******************************************************************************************\n"<<endl; bool cb=false; char ch; while(!cb) { cout<<"\t\t\tenter customer's ID :"; string _ID; getline(cin,_ID); cout<<endl; try { customerItem &citem=ctree.search(_ID); citem.display(); cout<<"--------------------------------------------------------------------------------\n"<<endl; bool cont=false; char man; while(!man) { cout<<"\t\t\tenter the book's ISBN :"; string _isbn; getline(cin,_isbn); cout<<endl; try { bookItem &bitem=btree.search(_isbn); bitem.display(); try { citem.borrow(bitem); cout<<"\t\t\t\tborrow success!"<<endl; cout<<"\t do you want to continue( Y for continue and N for Exit):"; cin>>man; while(cin.get()!='\n') ; if(man=='Y'||man=='y') man=false; else man=true; } catch(customerException &cexcept) { throw; } } catch(customerException &cexcept) { throw; } catch(bookException &bexcept) { throw; } } } catch(customerException &cexcept) { throw; } catch(bookException &bcexcept) { throw; } cout<<"\t is somebody continue( Y for continue and N for Exit ):"; cin>>ch; while(cin.get()!='\n') ; if(ch=='Y'||ch=='y') cb=false; else cb=true; } } else cout<<" \t\t\a\aname or password is wrong .Login failed !"<<endl; } //******************************************************************* // customer_system.h implemention file---customer_system.cpp //******************************************************************** #ifndef CUSTOMER_SYSTEM_H_ #define CUSTOMER_SYSTEM_H_ #include"book_tree.h" #include"customer_tree.h" class customerSys { public: customerSys(); int custom(bookTree &btree,customerTree &ctree) throw(bookException,customerException); }; #endif

//***********************************************************
// customer_system.cpp managing customer'information task
//************************************************************
#include"customer_system.h"
#include<cstdlib>
customerSys::customerSys()
{}
int customerSys::custom(bookTree &btree,customerTree &ctree)
	throw(bookException ,customerException)
{
	system("cls");
	cout<<"********************************************************************************\n"<<endl;
	cout<<"\t\t\tenter Customer's ID :";
	string _id;
        getline(cin,_id);
	bool ok=false;
	while(!ok)
	{
	      try
	        {       ok=true;
	        	customerItem &citem=ctree.search(_id);
			cout<<"\t\t\tenter Customer's password :";
                   	string _password;
                        getline(cin,_password);
                 	cout<<endl;
                	if(_id==citem.getID()&&_password==citem.getPassword())
                       	{
	                     	cout<<"\t\t\t\t  login success !"<<endl;
	                	cout<<"********************************************************************************"<<endl;
	                	citem.display();
	                	cout<<"********************************************************************************"<<endl;
	                	cout<<"\t\t    would you want to reset your password ?"<<endl;
			        cout<<"\t\t\t  Y for Yes and N for No :";
				char yes;
				cin>>yes;
				while(cin.get()!='\n')
					;
				if(yes=='Y'||yes=='y')
				{
					string pass_word;
					bool _bl=true;
					while(_bl){
					cout<<"\n\t\t\tenter your new password :";
					getline(cin,_password);
					cout<<endl;
					cout<<"\t\t\tenter your new password again :";
					getline(cin,pass_word);
					cout<<endl;
					if(pass_word==_password)
					{
						_bl=false;
						citem.setPassword(pass_word);
						cout<<"\n\t\t\t  new password set success !"<<endl;
					}
					else
					{
						cout<<"\n\t\t\t   new password set failed !"<<endl;
					}
					}

				}
				return 0;
                      	}
                	else
                	{
	                   	cout<<"\t\t    Id or password is wrong ,login failed !"<<endl;
	                	return 2;
                   	}
         	}
	      catch(customerException &cexcept)
        	{
	        	cout<<"\t\t  You input ID is invalid !Continue ? Y or N :";
			char yn;
			cin>>yn;
			while(cin.get()!='\n')
				;
			if(yn=='Y'||yn=='y')
			{
			cout<<"\t\t\tenter your ID again :";
			getline(cin,_id);
			ok=false;
			}
			else
				return 1;
        	}
	}
	
	
	
}

//********************************************************** // manage_system.h implemention file--manage_system.cpp //*********************************************************** #ifndef MANAGE_SYSTEM_H_ #define MANAGE_SYSTEM_H_ #include<string> #include<iostream> #include<fstream> #include"book_tree.h" #include"customer_tree.h" using namespace std; void cshow(const customerItem &_item); void bshow(const bookItem &_item); class manageSys { private: string name; string password; public: manageSys(); void createAccount(); string getName()const; string getPassword()const; void setPassword(const string &_password); void manage(bookTree &btree,customerTree &cTree) throw(bookException,customerException); friend ofstream &operator<<(ofstream &fout,const manageSys &_sys); friend ifstream &operator>>(ifstream &fin,manageSys &_sys); }; #endif

//***************************************************************
//    manage_system.cpp managing customers and books information 
//***************************************************************
#include"manage_system.h"
#include<cstdlib>
void cshow(const customerItem &_item)
{
	_item.display();
}
void bshow(const bookItem &_item)
{
	_item.display();
}
manageSys::manageSys()
{
	name="";
	password="";
}
void manageSys::createAccount()
{
	cout<<"\t\t      Create a new managing Admin account \n"<<endl;
	cout<<"\t\t\tenter Admin's name :";
	getline(cin,name);
	cout<<endl;
	bool isok=false;
	string _password;
	while(!isok)
	{
        	cout<<"\t\t\tenter Admin's password :";
          	getline(cin,_password);
        	cout<<"\n\t\t\tenter Admin's password again :";
        	getline(cin,password);
         	if(password!=_password)
        	{
	        	cout<<"\t\t\t\a\a\aenter the password wrong !enter once more "<<endl;

         	}
         	else
	        	isok=true;
       	}
	cout<<"\t\t\tcreat new Admin account success !"<<endl;
}
string manageSys::getName()const
{
	return name;
}
string manageSys::getPassword()const
{
	return password;
}
void manageSys::setPassword(const string &_password)
{
	password=_password;
}
ofstream &operator<<(ofstream &fout,const manageSys &_sys)
{
	fout<<_sys.name<<'~'<<_sys.password<<'~'<<endl;
	return fout;
}
ifstream &operator>>(ifstream &fin,manageSys &_sys)
{
	getline(fin,_sys.name,'~');
	getline(fin,_sys.password,'~');
	while(fin.get()!='\n')
		;
	return fin;
}
void manageSys::manage(bookTree &btree,customerTree &ctree)
	throw(bookException,customerException)
{
	system("cls");
	cout<<"********************************************************************************\n"<<endl;
	cout<<"\t\t\tenter Admin's name :";
	string _name;
        getline(cin,_name);
	cout<<"\t\t\tenter Admin's password :";
	string _password;
        getline(cin,_password);
	cout<<endl;
	if(_name==name&&_password==password)
	{
		cout<<"\t\t\t\t  login success !"<<endl;
		cout<<"********************************************************************************"<<endl;
		cout<<"********************************************************************************\n"<<endl;
		cout<<"**********                enter entry managing project                **********"<<endl;
		cout<<"**********                 A or a  for Adding Customer                **********"<<endl;
		cout<<"**********                 D or d  for Deleting Customer              **********"<<endl;
		cout<<"**********                 I or i  for Inserting Book                 **********"<<endl;
		cout<<"**********                 R or r  for Removing Book                  **********"<<endl;
		cout<<"**********                 T or t  for Traversing Customer            **********"<<endl;
		cout<<"**********                 L or l  for Looking Books                  **********"<<endl;
		cout<<"**********                 Q or q  for quiting mangement              **********\n"<<endl;
		cout<<"********************************************************************************"<<endl;
		cout<<"********************************************************************************"<<endl;
		cout<<"\t\t\tselect managing project :";
		char ch;
		cin>>ch;
		while(cin.get()!='\n')
			;
		while(ch!='Q'&&ch!='q')
		{
			if(ch=='A'||ch=='a')
			{
				customerItem citem;
				citem.createCustomerItem();
				citem.display();
				try{
				ctree.insert(citem);
				}catch(customerException &cexcep)
				{
					throw;
				}
				cout<<"\t\t\t\t insert customer success !"<<endl;
			}
			else if(ch=='D'||ch=='d')
			{
				cout<<"\t\t\t\t\tenter the customer's ID :";
				string _id;
				getline(cin,_id);
				try{
				ctree.search(_id).display();
				}catch(customerException &cexcep)
				{
					throw;
				}
				cout<<"\t\t\t  delete the customer really ?"<<endl;
				cout<<"\t\t\t   Y  for yes and N for No :"<<endl;
				char del;
				cin>>del;
				while(cin.get()!='\n')
					;
				if(del=='Y'or del=='y')
				{
					try{
					ctree.remove(_id);
					}
					catch(customerException &cexcept)
					{
						throw;
					}
					cout<<"\t\t\t    delete customer success !"<<endl;
				}
				else
					cout<<"\t\t\t    \a\a\adelete customer failed !"<<endl;
				
			}
			else if(ch=='I'||ch=='i')
			{
				bookItem bitem;
				bitem.createBookItem();
				bitem.display();
				try
				{
					btree.insert(bitem);
				}
				catch(bookException &bExcept)
				{
					throw;
				}
				cout<<"\t\t\t      book insert success !"<<endl;
			}
			else if(ch=='R'||ch=='r')
			{
		                cout<<"\t\t\tenter the book's ISBN :";
				string _isbn;
				getline(cin,_isbn);
				try{
				bookItem &bitem=btree.search(_isbn);
						bitem.display();
				if(bitem.getStatus())
				{
				cout<<"\t\t\t  delete the book really ?"<<endl;
				cout<<"\t\t\t  Y for yes and N for No :"<<endl;
				char del;
				cin>>del;
				while(cin.get()!='\n')
					;
				if(del=='Y'or del=='y')
				{

					try{
					btree.remove(_isbn);
					}
					catch(customerException &cexcept)
					{
						throw;
					}
					cout<<"\t\t\t  delete customer success !"<<endl;
				}
				else
					cout<<"\t\t\t  \a\a\adelete customer failed !"<<endl;
				}
				else
					cout<<"\t\t\t\a\a\a\aborrowing  book delete failed !"<<endl;
				}catch(bookException &cexcep)
				{
					throw;
				}
		
			}
			else if(ch=='T'||ch=='t')
			{
				cout<<"\t\t      display all the customer information "<<endl<<endl;
				ctree.traverse(cshow);
				cout<<"\t\t\t      total "<<ctree.getAmount()<<" customers "<<endl<<endl;
			}
			else if(ch=='L'||ch=='l')
			{
				cout<<"\t\t      display all the book information "<<endl;
				btree.traverse(bshow);
				cout<<"\t\t\t       total "<<btree.getAmount()<<" books "<<endl;
			}

                        	cout<<"********************************************************************************"<<endl;
                     		cout<<"********************************************************************************\n"<<endl;
                		cout<<"**********                enter entry managing project                **********"<<endl;
                		cout<<"**********                 A or a  for Adding Customer                **********"<<endl;
                   		cout<<"**********                 D or d  for Deleting Customer              **********"<<endl;
                       		cout<<"**********                 I or i  for Inserting Book                 **********"<<endl;
                   		cout<<"**********                 R or r  for Removing Book                  **********"<<endl;
                  		cout<<"**********                 T or t  for Traversing Customer            **********"<<endl;
				cout<<"**********                 L or l  for Looking Books                  **********"<<endl;
				cout<<"**********                 Q or q  for quiting mangement              **********\n"<<endl;				cout<<"********************************************************************************"<<endl;
				cout<<"********************************************************************************"<<endl;
				cout<<"\t\t\tselect managing project :";
		         	cin>>ch;
		           	while(cin.get()!='\n')
			        	;


			}

		

	}
	else
		cout<<"\t\t  \a\a\aname or password is wrong .Login failed !"<<endl;

}

//*******************************************************************
// library_management_system.cpp    main()  function 
//           library system operating interface
//******************************************************************
#include"borrow_system.h"
#include"customer_system.h"
#include"manage_system.h"
#include"retrieve_system.h"
#include"return_system.h"
#include<cstdlib>
using namespace std;

int main()
{
	cout<<endl;
	cout<<endl<<endl<<endl<<endl;
	cout<<"  \t\twelecome to use the library management system "<<endl;
        cout<<endl<<endl<<endl;
	int numb_book,numb_customer;
	ifstream fin("bookandcustomernumbers.txt");
	if(fin.is_open())
		fin>>numb_book>>numb_customer;
	else
		numb_book=numb_customer=0;
	fin.close();
	bookTree bData;
	fin.open("booktreedata.txt");
	if(!fin.is_open())
	{
		cout<<"   \t\tthe library data is not exist ,create it !"<<endl<<endl<<endl;
                bool _continue=true;
		char ch;
		bookItem book;
		while(_continue)
		{
			book.createBookItem();
			book.display();
			try
			{
				bData.insert(book);
			}catch(bookException &bexcept)
			{
				cout<<"\t"<<bexcept.what()<<endl;
			}
			cout<<"\n\t\t\t   new book insert success !"<<endl<<endl;
			cout<<"\t      would you want to go on ?  Y for Yes and  N for No:";
			cin>>ch;
			while(cin.get()!='\n')
				;
			if(ch=='Y'||ch=='y')
				_continue=true;
			else
				_continue=false;
		}
		bData.traverse(bshow);
	}
	else 
		bData.read(fin,numb_book);
	fin.close();
       customerTree cData;
       fin.open("customertreedata.txt");
       if(fin.is_open())
	       cData.read(fin,numb_customer,bData);
       fin.close();
       borrowSys borrowAdmin;
       fin.open("borrowAdminData.txt");
       if(!fin.is_open())
       {
	       cout<<"\n\n\t\t  borrowAdministrator is not exist ,create it !"<<endl;
	       borrowAdmin.createAccount();
       }
       else
	       fin>>borrowAdmin;
       fin.close();
       
       manageSys manageAdmin;
       fin.open("manageAdminData.txt");
       if(!fin.is_open())
       {
	       cout<<"\n\n\t\t  manageAdministrator is not exist,create it!"<<endl;
	       manageAdmin.createAccount();
       }
       else
	       fin>>manageAdmin;
       fin.close();

       returnSys returnAdmin;
       fin.open("returnAdminData.txt");
       if(!fin.is_open())
       {
	       cout<<"\n\n\t\t  returnAdministrator is not exist,create it!"<<endl;
	       returnAdmin.createAccount();
       }
       else
	       fin>>returnAdmin;
      fin.close();
      
      customerSys customerAdmin;

      retrieveSys retrieveAdmin;

      system("pause");
      system("cls");
      cout<<endl;
      cout<<endl;
      cout<<"********************************************************************************"<<endl;
      cout<<"********************************************************************************"<<endl;
      cout<<"**********                                                            **********"<<endl;
      cout<<"**********                                                            **********"<<endl;
      cout<<"**********             Please Select The Manner Of Sevice             **********"<<endl;
      cout<<"**********                                                            **********"<<endl;
      cout<<"**********                      B   for   Borrow                      **********"<<endl;
      cout<<"**********                      C   for   Customer                    **********"<<endl;
      cout<<"**********                      R   for   Revert                      **********"<<endl;
      cout<<"**********                      I   for   Inquire                     **********"<<endl;
      cout<<"**********                      M   for   Manage                      **********"<<endl;
      cout<<"**********                      Q   for   Quit                        **********"<<endl;
      cout<<"**********                                                            **********"<<endl;
      cout<<"********************************************************************************"<<endl;
      cout<<"********************************************************************************"<<endl;
      cout<<"**********    Manner of Sevice :                                      **********";
      cout<<"\b\b\b\b\b\b\b\b\b\b\b\b\b";
      char _manner;
      cin>>_manner;
      while(cin.get()!='\n')
	      ;
      system("cls");
      while(_manner!='Q'&&_manner!='q')
      {
	      switch(_manner)
	      {
		      case 'B':
		      case 'b':{
				       try{
				       borrowAdmin.borrow(bData,cData);
			               }catch(bookException &be)
				       {
					       cout<<"\t"<<be.what()<<endl;
				       }
				       catch(customerException &ce)
				       {
					       cout<<"\t"<<ce.what()<<endl;
				       }
			                system("pause");
			       }
			       break;
		      case 'C':
		      case 'c':customerAdmin.custom(bData,cData);system("pause");break;
		      case 'R':
		      case 'r':{
				       try{
				       returnAdmin.revert(bData,cData);
				       }catch(bookException &be)
				       {
					       cout<<"\t"<<be.what()<<endl;
				       }
				       catch(customerException &ce)
				       {
					       cout<<"\t"<<ce.what()<<endl;
				       }
				       system("pause");
				    
			       }
			       break;
		      case 'I':
		      case 'i':{
				       try{
					       retrieveAdmin.retrieve(bData);
				       }catch(bookException &be)
				       {
					       cout<<"\t"<<be.what()<<endl;
				       }
				       catch(customerException &ce)
				       {
					       cout<<"\t"<<ce.what()<<endl;
				       }
				       system("pause");
			       }
			       break;
		      case 'M':
		      case 'm':{
				       try{
				                 manageAdmin.manage(bData,cData);
				       }catch(bookException &be)
				       {
					       cout<<"\t"<<be.what()<<endl;
				       }
				       catch(customerException &ce)
				       {
					       cout<<"\t"<<ce.what()<<endl;
				       }
				       system("pause");
			       }
			       break;
		      default:
			       {
				       cout<<"     \t\t\tselect wrong command !"<<endl;
				       cout<<"\n   \t\t\t\tselect again !"<<endl;
			       }; system("pause");break;
	      }
               
                system("cls");
                cout<<endl;
                cout<<endl;
      cout<<"********************************************************************************"<<endl;
      cout<<"********************************************************************************"<<endl;
      cout<<"**********                                                            **********"<<endl;
      cout<<"**********                                                            **********"<<endl;
      cout<<"**********             Please Select The Manner Of Sevice             **********"<<endl;
      cout<<"**********                                                            **********"<<endl;
      cout<<"**********                      B   for   Borrow                      **********"<<endl;
      cout<<"**********                      C   for   Customer                    **********"<<endl;
      cout<<"**********                      R   for   Revert                      **********"<<endl;
      cout<<"**********                      I   for   Inquire                     **********"<<endl;
      cout<<"**********                      M   for   Manage                      **********"<<endl;
      cout<<"**********                      Q   for   Quit                        **********"<<endl;
      cout<<"**********                                                            **********"<<endl;
      cout<<"********************************************************************************"<<endl;
      cout<<"********************************************************************************"<<endl;
      cout<<"**********    Manner of Sevice :                                      **********";
                cout<<"\b\b\b\b\b\b\b\b\b\b\b\b\b";
		cin>>_manner;
		while(cin.get()!='\n')
			;
		system("cls");


       }
      ofstream fout("bookandcustomernumbers.txt");
      fout<<bData.getAmount()<<" "<<cData.getAmount()<<endl;
      fout.close();
      fout.open("customertreedata.txt");
      cData.write(fout);
      fout.close();
      
      fout.open("booktreedata.txt");
      bData.write(fout);
      fout.close();
      
      fout.open("borrowAdminData.txt");
      fout<<borrowAdmin;
      fout.close();

      fout.open("returnAdminData.txt");
      fout<<returnAdmin;
      fout.close();

      fout.open("manageAdminData.txt");
      fout<<manageAdmin;
      fout.close();

      cout<<"\t\t\t\t    OVER !"<<endl;

      system("pause");
      return 0;

}

references:

           《C++ primer》

           《Data Abstraction and Problem Solving With C++》