borrow.h

图书馆程序设计

#ifndef BORROW_H
#define BORROW_H

#include "date.h"
#include <iostream>
#include <string>
using namespace std;
namespace jixia
{
  class Borrow
  {
	int Book_ID;         // 藏书的条码
	int Reader_ID;       // 读者的证件号
	Date BorrowDay;      // 借书日期
	Date ReturnDay;      // 还书日期
    double Penalty;      // 罚金
  public:
	Borrow() {}
	Borrow(int book_ID,int reader_ID,Date borrowDay,Date returnDay,double penalty=0);
	Borrow(const Borrow &b);
	~Borrow() {}
    friend ostream& operator<<(ostream &o,Borrow &b);
    friend class Borrows;
	friend class Library;
  };
}

#endif