#include  
#include  
#include  
#include  
#define Maxbor 100 
#define Maxr 100 
#define Maxb 100 
using namespace std; 
class Reader 
{ 
private: 
int tag; //删除标记 1:已删 0:未删 
int no; //读者编号 
char name[10]; //读者姓名 
int borbook[Maxbor];//所借图书 
public: 
Reader() {} 
char *getname() {return name;} //获取姓名 
int gettag() {return tag;} //获取删除标记 
int getno() {return no;} //获取读者编号 
void setname(char na[]) //设置姓名 
{ 
strcpy(name,na); 
} 
void delbook(){ tag=1; }//设置删除标记 1:已删 0:未删 
void addreader(int n,char *na)//增加读者 
{ 
tag=0; 
no=n; 
strcpy(name,na); 
for(int i=0;i> choice; 
switch (choice) 
{ 
case '1': 
cout > readerid; 
cout > rname; 
addreader (readerid,rname); 
break; 
case '2': 
cout > readerid; 
r=query(readerid); 
if (r==NULL) 
{ 
cout > rname; 
r->setname(rname); 
break; 
case '3': 
cout > readerid; 
r=query(readerid); 
if (r==NULL) 
{ 
cout delbook(); 
break; 
case '4': 
cout > readerid; 
r=query(readerid); 
if (r==NULL) 
{ 
cout disp(); 
break; 
case '5': 
disp(); 
break; 
case '6': 
clear(); 
break; 
default:cout> choice; 
switch (choice) 
{ 
case '1': 
cout > bookid; 
cout > bname; 
addbook(bookid,bname); 
break; 
case '2': 
cout > bookid; 
b=query(bookid); 
if (b==NULL) 
{ 
cout > bname; 
b->setname(bname); 
break; 
case '3': 
cout > bookid; 
b=query(bookid); 
if (b==NULL) 
{ 
cout delbook(); 
break; 
case '4': 
cout > bookid; 
b=query(bookid); 
if (b==NULL) 
{ 
cout disp(); 
break; 
case '5': 
disp(); 
break; 
case '6': 
clear(); 
break; 
default:cout> choice; 
switch (choice) 
{ 
case '1': 
cout >readerid; 
cout >bookid; 
r=ReaderDB。
  query(readerid);//按编号查找 
if (NULL==r) 
{ 
cout borrowbook()==0) 
{ 
cout borrowbook(b->getno()); 
break; 
case '2': 
cout>readerid; 
cout >bookid; 
r=ReaderDB。
  query(readerid); 
if (r==NULL) 
{ 
cout retbook(); 
r->retbook(b->getno()); 
break; 
case '3': 
 okdata(); 
break; 
case '4': 
 aderdata(); 
break; 
default:cout<<"输入错误，请从新输入："; 
} 
} 
}。