简单的图书馆借还系统——C++实现其实这是学期初的⼀次作业，整理⽂件的时候在⾓落⾥找到的，索性就把代码放上来。
⼀个⽐较简陋的图书馆借书/还书系统，也许以后有时间会做⼀些完善。
关于中国的图片⾸先完成⼀个图书馆类Opt_library，放在头⽂件中。
#ifndef Opt_library_H
#define Opt_library_H
class Opt_library {
private:
int card_number;//借书证号
int valid_days_left;//剩余有效⽇期
int Number_of_books;//这⼀次借出的书的数量
int books_issued;//上⼀次借出的书的数量
int books_returned;//归还的书的数量
public:
Opt_library() {}//⽆参构造函数
~Opt_library() {}//析构函数
int GetCardNumber() { return card_number; }//获取借书证号
void SetCardNumber(int c_number) { card_number = c_number; }//设置借书证号
int GetValidDays() { return valid_days_left; }//获取借书证的剩余有效⽇期
void SetValidDays(int v_d_left) { valid_days_left = v_d_left; }//设置借书证的剩余有效⽇期
int GetNumberOfBooks() { return Number_of_books; }//获取这⼀次借出的书的数量
void SetNumberOfBooks(int n_o_books) { Number_of_books = n_o_books; }//设置这⼀次借出的书的数量
int GetBooksIssued() { return books_issued; }//获取上⼀次借出的书本数量
void SetBooksIssued(int b_issued) { books_issued = b_issued; }//设置上⼀次借出的书本数量
int GetBooksReturned() { return books_returned; }//获取归还的书本数量
void SetBooksReturned(int b_returned) { books_returned = b_returned; }//设置归还的书本数量
};
#endif
然后是对借阅过程进⾏操作的⼀系列函数
#include "stdafx.h"
#include <iostream>
#include "Opt_library.h"
using namespace std;
inline void display(int card, int n_books)
{
cout <<"* "<< n_books << "book(s), issued to the card number" ；
cout << card << endl;
return;
};
//判断是否借出书本，接受借阅者输⼊的借阅数量。
inline void issue_books(int b_books, int re_books, int card,int n_o_books)
{
bool usable = (b_books == re_books);//判断借阅者是否已经将前⼀次借阅的书本全部归还
int b_tobeissued;
if (usable)
{ //“书本全部归还”判断为真中国最大的佛像
cout << "* Plea enter the number of books to be issued:" << endl;
//借阅者输⼊将要借阅的数量
cin >> b_tobeissued;
if (b_tobeissued > 2)
{ //借阅数量超过限制
cout << "* More than 2 books can not be issued at a time.";
cout << endl;
el if (b_tobeissued >= 0) {
n_o_books = b_tobeissued;
display(card,n_o_books);
}
el
{ //借阅者输⼊的数为负
cout << "* Sorry,the number you entered is forbiddened." << endl;
}
}
el
{ //“书本全部归还”判断为假
;
}
return ;
}
//确认借书证剩余的有效⽇期，调⽤了issue_books函数和display函数
inline void check_valid_days(int v_d_left, int b_issued, int b_returned, int c_number,int n_o_books)
{
if (v_d_left >= 15)
{ //借书证有效⽇期>=15天
issue_books(b_issued, b_returned, c_number, n_o_books);
}
el
{ //有效⽇期⼩于15天则⽆法借阅
cout << "* Books cannot be issued, there are not enough days left for the validity of card." << endl; }
return ;
}
inline void library(int c_number_1,int v_d_left_1,int b_issued_1, int b_returned_1,int n_o_books_1)
{
int c_number, v_d_left, b_issued, b_returned, n_o_books;
用竟造句Opt_library op1; //构建类op1
op1.SetCardNumber(c_number_1);
c_number= op1.GetCardNumber();
op1.SetValidDays(v_d_left_1);
v_d_left = op1.GetValidDays();
水平位移
op1.SetBooksIssued(b_issued_1);
b_issued = op1.GetBooksIssued();
op1.SetBooksReturned(b_returned_1);
b_returned = op1.GetBooksReturned();
op1.SetNumberOfBooks(n_o_books_1);
n_o_books = op1.GetNumberOfBooks();
bool usable=(b_issued == b_returned);//布尔函数判断借阅者是否已经将借出的书全部归还
if (b_issued==b_returned)6岁睡前故事
{ //借阅者已经将借出的书全部归还，执⾏下⼀步
cout << "* Card Number:"<<c_number<<endl;
cout << "* Valid days left:"<<v_d_left<<endl;
cout << "* Books issued previously:"<<b_issued<<endl;
cout << "* Books returned previously:"<<b_returned<<endl;
cout << "* The status has been cleared"<<endl;
check_valid_days(v_d_left, b_issued, b_returned, c_number,n_o_books);
}
el if (b_issued < b_returned)
{ //借阅者尚未将书本全部归还
cout << "* Number of books returned can not be greater than number of books issued." << endl; }
el
{ //归还的书过多
cout << "* No further operations can be made. Some books are still not returned." << endl;
return;
}
最后是项⽬的main.cpp⽂件
#include "stdafx.h"
幼儿园家长评语#include <stdlib.h>
#include <string>
#include "library.cpp"
using namespace std;
int main()
{
int card_number, days_left, books_issued, books_returned,n_o_books;
string a;
n_o_books = 0;
男宝宝小名cout << "*********************************************";
cout << "*********************************************" << endl;
cout <<"*"<< endl;
cout << "* Welcome to the library!" << endl;
cout << "* If you want to return books,press any key."<<endl;
cin >> a;
while (bool(a == "*")) {
cout << "* Enter card number :";
cin >> card_number;
cout << "* Enter days left for the validation:";
cin >> days_left;假死现象
cout << "* Enter number of books issued previously:";
cin >> books_issued;
cout << "* Enter number of books returned previously:";
cin >> books_returned;
library(card_number, days_left, books_issued, books_returned, n_o_books); }
system("pau");
return 0;
}
