程序：
#include<bits/stdc++.h>
using namespace std;
class Date
{
private:
int year;
int month;
int day;
public:
Date(int x,int y,int z):year(x),month(y),day(z){}
Date(){}
int getYear(){return year;}
int getMonth(){return month;}
int getDay(){return day;}
void setYear(int x){year=x;}
void setMonth(int x){month=x;}
void setDay(int x){day=x;}
friend ostream & operator <<(ostream & output,Date & obj)
{
output<<obj.year<<" "<<obj.month<<" "<<obj.day;
return output;
}
friend istream & operator >>(istream & input,Date & obj)
{
input>>obj.year>>obj.month>>obj.day;
return input;
}
bool operator <(const Date & obj)const
{
return obj.year!=year?year<obj.year:obj.month!=month?month<obj.month:day<obj.day;
}
};
class Record
{
private:
string bookName;
int bookIndex;
string stuName;
string type;//操作类型
int stuID;
Date opTime;
Date endTime;
bool ifback;//是否归还
public:
Record(){ifback=0;}
Record(string book,int b,string s1,int s2,string ty,Date o,Date end,bool f)
{
bookName=book;
bookIndex=b;
stuName=s1;
stuID=s2;
type=ty;
opTime=o;
endTime=end;
ifback=f;
}
string getName(){return bookName;}
int getIndex(){return bookIndex;}
string getstuName(){return stuName;}
int getID(){return stuID;}
Date getopTime(){return opTime;}
Date getendTime(){return endTime;}
bool getifback(){return ifback;}
string getType(){return type;}
void setType(string x){type=x;}
void setName(string x){bookName=x;}
void setIndex(int x){bookIndex=x;}
void setstuName(string x){stuName=x;}
void setID(int x){stuID=x;}
void setopTime(Date t){opTime=t;}
void setendTime(Date x){endTime=x;}//修改还书时间
void setifback(bool f){ifback=f;}
friend ostream & operator <<(ostream & out,Record & obj);
friend istream & operator >>(istream & in,Record & obj);
};
ostream & operator <<(ostream & out,Record & obj)
{
out<<obj.bookIndex<<" ";
out<<obj.bookName<<" ";
out<<obj.stuName<<" ";
out<<obj.stuID<<" ";
out<<obj.type<<" ";
out<<obj.opTime<<" ";
out<<obj.endTime<<" ";
out<<obj.ifback;
return out;
}
istream & operator >>(istream & in,Record & obj)
{
in>>obj.bookIndex>>obj.bookName>>obj.stuName>>obj.stuID>>obj.type>>
obj.opTime>>obj.endTime>>obj.ifback;
return in;
}
class Records
{
protected:
int RecordNum;
vector <Record> v1;
vector <Record> ::iterator vit1;
multimap<bool,int>m2;
multimap<bool,int>::iterator mit2;//是否归还bool
public:
Records(){RecordNum=0;}
int getRecordNum(){return RecordNum;}
vector <Record> & getRecord(){return v1;}
multimap<bool,int> & getM2(){return m2;}
void setRecordNum(int x){RecordNum=x;}
//无删除记录与增加记录Op，book类中和student类中这两个函数不同
void disAllRecord();//所有记录
void disNobackRecord();//显示未还书记录
};
void Records::disAllRecord()
{
for(int i=0;i<v1.size();++i)cout<<v1[i]<<endl;
}
void Records::disNobackRecord()
{
if(m2.find(0)!=m2.end())
for(mit2=m2.lower_bound(0);mit2!=m2.upper_bound(0);++mit2)
cout<<v1[mit2->second]<<endl;
else cout<<"no records!"<<endl;
}
class Book:public Records
{
private:
string name;
int index;
int tot;//总数
int shengyu;//剩余数量
char ch;//辅助格式
multimap<int,int>m1;
multimap<int,int>::iterator mit1;//学号int
public:
Book(string n,int in,int tott,int shengyuu)
{
name=n;
index=in;
tot=tott;
shengyu=shengyuu;
ch='/';
}
Book()
{
ch='/';
}
multimap<int,int>& getM1(){return m1;}
string getName(){return name;}
int getIndex(){return index;}
int getShengyu(){return shengyu;}
int getTot(){return tot;}
void setEndTime(int);//根据学号修改 op结束时间（续借）；
void setTot(int x){tot=x;}
void setShengyu(int x){shengyu=x;}
void setName(string x){name=x;}
void setIndex(int x){index=x;}
void deleteRecord(int id,Date preTime)//还书时 标记 借书记录；
{
for(mit1=m1.lower_bound(id);mit1!=m1.upper_bound(id);++mit1)
{
if(v1[mit1->second].getifback()==0)
{
v1[mit1->second].setifback(1);
v1[mit1->second].setendTime(preTime);
}
}
}
void addRecord(Record r)//增加一条记录
{
RecordNum++;
v1.push_back(r);
m2.insert(make_pair(r.getifback(),v1.size()-1));
m1.insert(make_pair(r.getID(),v1.size()-1));
}
friend ostream & operator <<(ostream & output,Book & obj);
friend istream & operator >>(istream & input,Book & obj);
void disBase()
{
cout<<index<<" "<<name<<" "<<shengyu<<" "<<ch<<
" "<<tot;
}
};
void Book::setEndTime(int id)
{
Date tt;
for(mit1=m1.lower_bound(id);mit1!=m1.upper_bound(id);++mit1)
{
if(v1[mit1->second].getifback()==0)
{
tt=v1[mit1->second].getopTime();
tt.setMonth(tt.getMonth()+2);
v1[mit1->second].setendTime(tt);
}
}
}
ostream & operator <<(ostream & output,Book & obj)
{
output<<obj.index<<" "<<obj.name<<" "<<obj.shengyu<<" "<<obj.ch<<
" "<<obj.tot<<" "<<obj.RecordNum<<endl;
if(obj.getRecordNum())
{
vector <Record> vt;
vt=obj.getRecord();
for(int j=0;j<vt.size();++j)
output<<vt[j]<<endl;
}
return output;
}
istream & operator >>(istream & input,Book & obj)
{
input>>obj.index>>obj.name>>obj.shengyu>>obj.ch>>obj.tot>>obj.RecordNum;
int p=obj.RecordNum;
obj.setRecordNum(0);
for(int i=1;i<=p;++i)
{
Record r;
input>>r;
obj.addRecord(r);
}
return input;
}
class Student:public Records
{
private:
string name;
int ID;
int num;//剩余借阅量
multimap<int,int>m1;
multimap<int,int>::iterator mit1;//书号int
public:
Student(string n,int id)
{
name=n;
ID=id;
num=10;
}
Student()
{
num=10;
}
multimap<int,int>& getM1(){return m1;}
string getName(){return name;}
int getID(){return ID;}
int getNum(){return num;}
void setName(string n){name=n;}
void setID(int x){ID=x;}
void setNum(int x){num=x;}
void deleteRecord(int index,Date preTime)//和student类中的同名函数有差别
{
for(mit1=m1.lower_bound(index);mit1!=m1.upper_bound(index);++mit1)
{
if(v1[mit1->second].getifback()==0)
{
v1[mit1->second].setifback(1);
v1[mit1->second].setendTime(preTime);
}
}
}
void setEndTime(int index)
{
Date tt;
for(mit1=m1.lower_bound(index);mit1!=m1.upper_bound(index);++mit1)
{
if(v1[mit1->second].getifback()==0)
{
tt=v1[mit1->second].getopTime();
tt.setMonth(tt.getMonth()+2);
v1[mit1->second].setendTime(tt);
}
}
}
void addRecord(Record r)//增加一条记录
{
RecordNum++;
v1.push_back(r);
m2.insert(make_pair(r.getifback(),v1.size()-1));
m1.insert(make_pair(r.getIndex(),v1.size()-1));//和book类中的添加函数有多不同；
}
bool queryTLE(Date);
void disBase()
{
cout<<name<<" ";
cout<<ID<<" ";
cout<<num;
}
friend ostream & operator <<(ostream & output,Student & obj);
friend istream & operator >>(istream & input,Student & obj);
};
istream & operator >>(istream & input,Student & obj)
{
input>>obj.name>>obj.ID>>obj.num>>obj.RecordNum;
int p=obj.getRecordNum();
obj.setRecordNum(0);
for(int i=1;i<=p;++i)
{
Record r;
input>>r;
obj.addRecord(r);
}
return input;
}
ostream & operator <<(ostream & output,Student & obj)
{
output<<obj.name<<" ";
output<<obj.ID<<" ";
output<<obj.num<<" ";
output<<obj.RecordNum<<endl;
if(obj.getRecordNum())
{
vector<Record>vt;
vt=obj.getRecord();
for(int j=0;j<vt.size();++j)
output<<vt[j]<<endl;
}
return output;
}
bool Student::queryTLE(Date tt)
{
Date temp;
for(mit2=m2.lower_bound(0);mit2!=m2.upper_bound(0);++mit2)
{
temp=v1[mit2->second].getendTime();
if(temp<tt)return 1;
}
return 0;
}
class MangerOp
{
private:
int stuNum;//学生总数
int bookNum;//书种数
vector <Student> v1;
vector <Student>::iterator vit1;
map <int,int> m1;//学号,hu yi,so just use map
map <int,int> ::iterator mit1;
vector <Book> v2;
vector <Book>::iterator vit2;
map<int,int>m2;//书号
map<int,int>::iterator mit2;
map<string,int> m3;//书名
map<string,int> ::iterator mit3;
public:
MangerOp()
{
stuNum=0;bookNum=0;v2.clear();m2.clear();m3.clear();
load1();load2();
}
~MangerOp()
{
save1();
save2();
}
void load1();
void load2();
void save1();
void save2();
void addBook();
void addStu();
void deleteBook();
void deleteStu();
void queryStuAll();//查询某学生所有记录
void queryStuNoback();//未还书记录
void queryBookAllRecord();
void queryBookNoback();
void queryABook();//某本书信息
void queryAStu();//某同学信息
};
void MangerOp::load1()
{
ifstream infile("20171778book.txt",ios::in);
if(!infile)return ;
v2.clear();
m2.clear();
m3.clear();
Book b;
int i=0;
while(infile>>b)
{
bookNum++;
v2.push_back(b);
m2.insert(make_pair(b.getIndex(),i));
m3.insert(make_pair(b.getName(),i));
i++;
vector < Record > & vt=b.getRecord();//传引用法；此外考虑在book类中写一个小函数清空记录向量；
multimap<bool,int> & m2=b.getM2();
multimap<int,int>& m1=b.getM1();
vt.clear();
m1.clear();m2.clear();m3.clear();
}
bookNum=i;
infile.close();
cout<<"books load success!"<<endl;
}
void MangerOp::load2()
{
ifstream infile("20171778stu.txt",ios::in);
if(!infile)return ;
v1.clear();
m1.clear();
Student s;
int i=0;
while(infile>>s)
{
v1.push_back(s);
m1.insert(make_pair(s.getID(),i));
i++;
vector <Record> & vt=s.getRecord();//
multimap <bool,int> & m2=s.getM2();
multimap<int,int> & m1=s.getM1();
vt.clear();
m1.clear();
m2.clear();
}
stuNum=i;
infile.close();
cout<<"students load success!"<<endl;
}
void MangerOp::save1()
{
ofstream outfile("20171778book.txt",ios::out);
if(!outfile)return ;
for(int i=0;i<bookNum;++i)
{
outfile<<v2[i];
}
outfile.close();
}
void MangerOp::save2()
{
ofstream outfile("20171778stu.txt",ios::out);
if(!outfile)return ;
for(int i=0;i<stuNum;++i)
{
outfile<<v1[i];
}
outfile.close();
}
void MangerOp::queryAStu()
{
int id;
cin>>id;
mit1=m1.find(id);
if(mit1!=m1.end())
{
cout<<v1[m1[id]];
}
}
void MangerOp::queryABook()
{
int index;
cin>>index;
mit2=m2.find(index);
if(mit2!=m2.end())
cout<<v2[m1[index]];
}
void MangerOp::addBook()
{
string name;
int index;
int n;
while(cin>>index&&index!=-1)
{
cin>>name>>n;//输入书号，书名，数量
mit2=m2.find(index);
if(mit2!=m2.end())
{
v2[mit2->second].setTot(v2[mit2->second].getTot()+n);
v2[mit2->second].setShengyu(v2[mit2->second].getShengyu()+n);
}
else
{
v2.push_back(Book(name,index,n,n));
m2.insert(make_pair(index,v2.size()-1));
m3.insert(make_pair(name,v2.size()-1));
bookNum++;
}
}
}
void MangerOp::addStu()
{
int id;
string name;
while(cin>>id&&id!=-1)//输入id 姓名
{
cin>>name;
mit1=m1.find(id);
if(mit1==m1.end())
{
stuNum++;
v1.push_back(Student(name,id));
m1.insert(make_pair(id,v1.size()-1));
}
}
}
void MangerOp::deleteBook()
{
int index,num;
cin>>index>>num;
mit2=m2.find(index);
int i=mit2->second;
if(mit2!=m2.end())
{
if(num==v2[i].getShengyu()&&num==v2[i].getTot())
{
bookNum--;
v2.erase(v2.begin()+i);
m2.erase(index);
m3.erase(v2[i].getName());
}
else if(num<=v2[i].getShengyu())
{
v2[i].setShengyu(v2[i].getShengyu()-num);
v2[i].setTot(v2[i].getTot()-num);
}
}
}
void MangerOp::deleteStu()
{
int id;
cin>>id;
mit1=m1.find(id);
if(mit1!=m1.end())
{
stuNum--;
m1.erase(id);
v1.erase(v1.begin()+(mit1->second));
}
}
void MangerOp::queryBookAllRecord()
{
int index;
cin>>index;
mit2=m2.find(index);
if(mit2!=m2.end())
{
v2[mit2->second].disAllRecord();
}
}
void MangerOp::queryBookNoback()
{
int index;
cin>>index;
mit2=m2.find(index);
if(mit2!=m2.end())
{
v2[mit2->second].disNobackRecord();
}
}
void MangerOp::queryStuAll()
{
int id;
cin>>id;
mit1=m1.find(id);
if(mit1!=m1.end())
{
v1[mit1->second].disAllRecord();
}
}
void MangerOp::queryStuNoback()
{
int id;
cin>>id;
mit1=m1.find(id);
if(mit1!=m1.end())
{
v1[mit1->second].disNobackRecord();
}
}
class StuOp
{
private:
Student stu;
int id;
Date t1;
vector <Book> v1;
vector <Book> ::iterator vit1;
map <int,int >m1;
map <int,int >::iterator mit1;//shu hao
public:
StuOp(int ID,Date t):id(ID),t1(t)
{
load1();
load2();
}
~StuOp()
{
save1();
save2();
}
void load1();//book
void load2();//student
void save1();
void save2();
void borrow();
void back();
void againBorrow();//续借
void disAllRecord();//该生所有记录
void disNobackRecord();//未还书记录
void queryABook();
void disAllBook();
};
void StuOp::load1()
{
ifstream infile("20171778book.txt",ios::in);
if(!infile)return ;
v1.clear();
Book b;
int k=0;
while(infile>>b)
{
v1.push_back(b);
m1.insert(make_pair(b.getIndex(),k));
k++;
vector <Record> & vt=b.getRecord();
multimap<bool,int> & m2=b.getM2();
multimap<int,int>& m1=b.getM1();
vt.clear();
m1.clear();m2.clear();m1.clear();
}
infile.close();
cout<<"books load success!"<<endl;
}
void StuOp::load2()
{
bool flag=0;
ifstream infile("20171778stu.txt",ios::in);
if(!infile)return ;
Student s;
while(infile>>s)
{
if(s.getID()==id)
{
stu=s;stu.disBase();
cout<<"... ...landing success!"<<endl;
flag=1;
break;
}
vector<Record> & vt=s.getRecord();
multimap <bool,int> & m2=s.getM2();
multimap<int,int> & m1=s.getM1();
vt.clear();
m1.clear();
m2.clear();
}
if(!flag)cout<<"id wrong!"<<endl;
}
void StuOp::save1()
{
ofstream outfile("20171778book.txt",ios::out);
if(!outfile)return ;
for(int i=0;i<v1.size();++i)
{
outfile<<v1[i];
}
outfile.close();
}
void StuOp::save2()
{
ifstream infile("20171778stu.txt",ios::in);
if(!infile)return ;
vector <Student> v3;
vector <Student>::iterator vit3;
int k=0;
Student s;
while(infile>>s)
{
v3.push_back(s);
k++;
vector <Record> & vt=s.getRecord();
multimap <bool,int> & m2=s.getM2();
multimap<int,int> & m1=s.getM1();
vt.clear();
m1.clear();
m2.clear();
}
infile.close();
ofstream outfile("20171778stu.txt",ios::out);
if(!outfile)return ;
for(int i=0;i<v3.size();++i)
{
if(v3[i].getID()==stu.getID())
{
outfile<<stu;
}
else
{
outfile<<v3[i];
}
}
outfile.close();
}
void StuOp::disAllBook()
{
cout<<"disAllBook ："<<endl;
for(mit1=m1.begin();mit1!=m1.end();++mit1)
{
v1[mit1->second].disBase();
cout<<endl;
}
}
void StuOp::queryABook()
{
int index;
cin>>index;
mit1=m1.find(index);
if(mit1!=m1.end())
cout<<v1[m1[index]];
}
void StuOp::disAllRecord()
{
stu.disAllRecord();
}
void StuOp::disNobackRecord()
{
stu.disNobackRecord();
}
void StuOp::borrow()
{
int index;
cin>>index;
mit1=m1.find(index);
if(mit1==m1.end())cout<<"book fail!"<<endl;
else
{
Date t2;
t2=t1;
t2.setMonth(t1.getMonth()+1);
if(stu.getNum()<1||v1[m1[index]].getShengyu()<1)cout<<"num fail!"<<endl;
if(stu.queryTLE(t1))cout<<"TlE fail!"<<endl;
else
{
Record rr(v1[m1[index]].getName(),index,stu.getName(),stu.getID(),"jieshu",t1,t2,0);
stu.addRecord(rr);
v1[m1[index]].addRecord(rr);
v1[mit1->second].setShengyu(v1[m1[index]].getShengyu()-1);
stu.setNum(stu.getNum()-1);
cout<<"borrow success!"<<endl;
}
}
}
void StuOp::back()
{
int index;
cin>>index;
mit1=m1.find(index);
if(mit1!=m1.end())
{
Record r(v1[m1[index]].getName(),index,stu.getName(),stu.getID(),"huanshu",t1,t1,1);
stu.addRecord(r);
v1[mit1->second].addRecord(r);
stu.setNum(stu.getNum()+1);
v1[mit1->second].setShengyu(v1[mit1->second].getShengyu()+1);
stu.deleteRecord(index,t1);
v1[mit1->second].deleteRecord(stu.getID(),t1);
cout<<"back success!"<<endl;
}
else cout<<"query fail!"<<endl;
}
void StuOp::againBorrow()
{
int index;
cin>>index;
mit1=m1.find(index);
if(mit1!=m1.end())
{
Record r(v1[m1[index]].getName(),index,stu.getName(),stu.getID(),"xvjie",t1,t1,1);
v1[mit1->second].addRecord(r);
stu.addRecord(r);
stu.setEndTime(index);
v1[mit1->second].setEndTime(stu.getID());
cout<<"againBorrow success!"<<endl;
}
}
int main()
{
//MangerOp man; man.deleteBook();
//man.deleteStu();
// /*
int id;
Date t;
cin>>id>>t;
StuOp stu(id,t);
stu.disAllBook();//显示所有书；
stu.borrow();
//stu.back();
//stu.againBorrow();
//*/
return 0;
}心得：
通过打这个系统，我更好的的学习了继承、STL的vector和map、以及对文件的操作