åäºå¤©æä¹é®äºä¸ä¸ªå·®ä¸å¤çCç¨åºï¼ä½ å¯ä»¥åèä¸ä¸ï¼æ¯å¾ä¹¦ç®¡çç³»ç»çï¼ä½ è¦æ±å®ç°çåè½ä¹é½æ
#include <iostream.h>
#include <iomanip.h>
#include <string.h>
#include <fstream.h>
const int Maxr=100; //读è
ä¸é
const int Maxb=100; //å¾ä¹¦ä¸é
const int Maxbor=5; //æ¯ä¸ªè¯»è
æå¤åå5æ¬
class Reader //读è
ç±»
{
int tag; //å é¤æ è®° 1ï¼å·²å ï¼0ï¼æªå
int no; //读è
ç¼å·
char name[10]; //读è
å§å
int borbook[Maxbor]; //æåå¾ä¹¦
public:
Reader() {}
char *getname() {return name;} //è·åå§å
int gettag() {return tag;} //è·åå é¤æ è®°
int getno() {return no;} //è·å读è
ç¼å·
void setname(char na[]) //设置å§å
{
strcpy(name,na);
}
void delbook() {tag=1;} //设置å é¤æ è®°
void addreader(int n,char *na) //å¢å 读è
{
tag=0;
no=n;
strcpy(name,na);
for (int i=0;i<Maxbor;i++)
borbook[i]=0;
}
void borrowbook(int bookid) //å书æä½
{
for (int i=0;i<Maxbor;i++)
{
if (borbook[i]==0)
{
borbook[i]=bookid;
return;
}
}
}
int retbook(int bookid) //è¿ä¹¦æä½
{
for (int i=0;i<Maxbor;i++)
{
if (borbook[i]==bookid)
{
borbook[i]=0;
return 1;
}
}
return 0;
}
void disp() //è¾åºè¯»è
ä¿¡æ¯
{
cout<<setw(5)<<no<<setw(10)<<name<<"å书ç¼å·:[";
for (int i=0;i<Maxbor;i++)
if (borbook[i]!=0)
cout<<borbook[i]<<"|";
cout<<"]"<<endl;
}
};
class RDatabase //读è
åºç±»
{
int top; //读è
è®°å½æé
Reader read[Maxr]; //读è
è®°å½
public:
RDatabase() //æé å½æ°ï¼å°reader.txt读å°read[]ä¸
{
Reader s;
top=-1;
fstream file("reader.txt",ios::in);
while (1)
{
file.read((char *)&s,sizeof(s));
if (!file) break;
top++;
read[top]=s;
}
file.close();
}
void clear() //å é¤ææ读è
ä¿¡æ¯
{
top=-1;
}
int addreader (int n,char *na) //æ·»å 读è
æ¶å
æ¥æ¾æ¯å¦åå¨
{
Reader *p=query(n);
if (p==NULL)
{
top++;
read[top].addreader(n,na);
return 1;
}
return 0;
}
Reader *query(int readerid) //æç¼å·æ¥æ¾
{
for (int i=0;i<=top;i++)
if (read[i].getno()==readerid && read[i].gettag()==0)
return &read[i];
return NULL;
}
void disp() //è¾åºææ读è
ä¿¡æ¯
{
for (int i=0;i<=top;i++)
read[i].disp();
}
void readerdata(); //读è
åºç»´æ¤
~RDatabase() //ææå½æ°ï¼å°read[]åå
¥reader.txtæ件ä¸
{
fstream file("reader.txt",ios::out);
for (int i=0;i<=top;i++)
if (read[i].gettag()==0)
file.write((char *)&read[i],sizeof(read[i]));
file.close();
}
};
void RDatabase::readerdata()
{
int choice=1;
char rname[20];
int readerid;
Reader *r;
while (choice!=0)
{
cout<<"读è
ç»´æ¤ 1ï¼æ°å¢ 2ï¼æ´æ¹ 3ï¼å é¤ 4ï¼æ¥æ¾ 5ï¼æ¾ç¤º 6ï¼å
¨å 0ï¼éåº=>";
cin>>choice;
switch (choice)
{
case 1:
cout<<"è¾å
¥è¯»è
ç¼å·ï¼";
cin>>readerid;
cout<<"è¾å
¥è¯»è
å§åï¼";
cin>>rname;
addreader(readerid,rname);
break;
case 2:
cout<<"è¾å
¥è¯»è
ç¼å·ï¼";
cin>>readerid;
r=query(readerid);
if (r==NULL)
{
cout<<"该读è
ä¸åå¨"<<endl;
break;
}
cout<<"è¾å
¥æ°çå§åï¼";
cin>>rname;
r->setname(rname);
break;
case 3:
cout<<"è¾å
¥è¯»è
ç¼å·ï¼";
cin>>readerid;
r=query(readerid);
if (r==NULL)
{
cout<<"该读è
ä¸åå¨"<<endl;
break;
}
r->delbook();
break;
case 4:
cout<<"è¾å
¥è¯»è
ç¼å·ï¼";
cin>>readerid;
r=query(readerid);
if (r==NULL)
{
cout<<"该读è
ä¸åå¨"<<endl;
break;
}
r->disp();
break;
case 5:
disp();
break;
case 6:
clear();
break;
}
}
}
class Book //å¾ä¹¦ç±»
{
int tag; //å é¤æ è®° 1ï¼å·²å 0ï¼æªå
int no; //å¾ä¹¦ç¼å·
char name[20]; //书å
int onshelf; //æ¯å¦å¨æ¶ 1ï¼å¨æ¶ 0ï¼å·²å
public:
Book() {}
char *getname() {return name;} //è·å¾ä¹¦å
int getno() {return no;} //è·å¾ä¹¦ç¼å·
int gettag() {return tag;} //è·å¾å é¤æ è®°
void setname(char na[]) //设置书å
{
strcpy(name,na);
}
void delbook() {tag=1;} //å é¤å¾ä¹¦
void addbook(int n,char *na) //å¢å å¾ä¹¦
{
tag=0;
no=n;
strcpy (name,na);
onshelf=1;
}
int borrowbook() //å书æä½
{
if (onshelf==1)
{
onshelf=0;
return 1;
}
return 0;
}
void retbook() //è¿ä¹¦æä½
{
onshelf=1;
}
void disp() //è¾åºå¾ä¹¦
{
cout<<setw(6)<<no<<setw(18)<<name<<setw(10)<<(onshelf==1? "å¨æ¶":"å·²å")<<endl;
}
};
class BDatabase //å¾ä¹¦åºç±»
{
int top; //å¾ä¹¦è®°å½æé
Book book[Maxb]; //å¾ä¹¦è®°å½
public:
BDatabase() //æé å½æ°ï¼å°book.txt读å°book[]ä¸
{
Book b;
top=-1;
fstream file("book.txt",ios::in);
while (1)
{
file.read((char*)&b,sizeof(b));
if (!file) break;
top++;
book[top]=b;
}
file.close();
}
void clear() //å
¨å
{
top=-1;
}
int addbook(int n,char *na) //å¢å å¾ä¹¦
{
Book *p=query(n);
if (p==NULL)
{
top++;
book[top].addbook(n,na);
return 1;
}
return 0;
}
Book *query(int bookid) //æ¥æ¾å¾ä¹¦
{
for (int i=0;i<=top;i++)
if (book[i].getno()==bookid && book[i].gettag()==0)
return &book[i];
return NULL;
}
void bookdata(); //å¾ä¹¦åºç»´æ¤
void disp()
{
for (int i=0;i<=top;i++)
if (book[i].gettag()==0)
book[i].disp();
}
~BDatabase() //
{
fstream file("book.txt",ios::out);
for (int i=0;i<=top;i++)
if (book[i].gettag()==0)
file.write((char*)&book[i],sizeof(book[i]));
file.close();
}
};
void BDatabase::bookdata()
{
int choice=1;
char bname[40];
int bookid;
Book *b;
while (choice!=0)
{
cout<<"å¾ä¹¦ç»´æ¤ 1ï¼æ°å¢ 2ï¼æ´æ¹ 3ï¼å é¤ 4ï¼æ¥æ¾ 5ï¼æ¾ç¤º 6ï¼å
¨å 0ï¼éåº=>";
cin>>choice;
switch (choice)
{
case 1:
cout<<"è¾å
¥å¾ä¹¦ç¼å·ï¼";
cin>>bookid;
cout<<"è¾å
¥å¾ä¹¦ä¹¦åï¼";
cin>>bname;
addbook(bookid,bname);
break;
case 2:
cout<<"è¾å
¥å¾ä¹¦ç¼å·ï¼";
cin>>bookid;
b=query(bookid);
if (b==NULL)
{
cout<<"该å¾ä¹¦ä¸åå¨"<<endl;
break;
}
cout<<"è¾å
¥æ°ç书åï¼";
cin>>bname;
b->setname(bname);
break;
case 3:
cout<<"è¾å
¥å¾ä¹¦ç¼å·ï¼";
cin>>bookid;
b=query(bookid);
if (b==NULL)
{
cout<<"该å¾ä¹¦ä¸åå¨"<<endl;
break;
}
b->delbook();
break;
case 4:
cout<<"è¾å
¥å¾ä¹¦ç¼å·ï¼";
cin>>bookid;
b=query(bookid);
if (b==NULL)
{
cout<<"该å¾ä¹¦ä¸åå¨"<<endl;
break;
}
b->disp();
break;
case 5:
disp();
break;
case 6:
clear();
break;
}
}
}
void main()
{
int choice=1,bookid,readerid;
RDatabase ReaderDB;
Reader *r;
BDatabase BookDB;
Book *b;
while(choice!=0)
{
cout<<"1:å书 2:è¿ä¹¦ 3:å¾ä¹¦ç»´æ¤ 4:读è
ç»´æ¤ 0:离å¼=>";
cin>>choice;
switch (choice)
{
case 1:
cout<<" å书 读è
ç¼å·ï¼";
cin>>readerid;
cout<<" å¾ä¹¦ç¼å·:";
cin>>bookid;
r=ReaderDB.query(readerid);
if (r==NULL)
{
cout<<"该读è
ä¸åå¨ï¼ä¸è½å书"<<endl;
break;
}
b=BookDB.query(bookid);
if (b==NULL)
{
cout<<"该读è
ä¸åå¨ï¼ä¸è½å书"<<endl;
break;
}
if (b->borrowbook()==0)
{
cout<<"该读è
ä¸åå¨ï¼ä¸è½å书"<<endl;
break;
}
r->borrowbook(b->getno());
break;
case 2:
cout<<"è¿ä¹¦ 读è
ç¼å·:";
cin>>readerid;
cout<<" å¾ä¹¦ç¼å·ï¼";
cin>>bookid;
r=ReaderDB.query(readerid);
if (r==NULL)
{
cout<<"ä¸åå¨è¯¥è¯»è
ï¼ä¸è½å书"<<endl;
break;
}
b=BookDB.query(bookid);
if (b==NULL)
{
cout<<"ä¸åå¨è¯¥å¾ä¹¦ï¼ä¸è½å书"<<endl;
break;
}
b->retbook();
r->retbook(b->getno());
break;
case 3:
BookDB.bookdata();
break;
case 4:
ReaderDB.readerdata();
break;
}
}
}
åçè
ï¼spacefwlym - ç«¥ç ä¸çº§ 12-10 15:43
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