1124905257887411C++图书管理系统.zip

#include <iostream> using namespace std; #include <fstream> #include <cstring> #include "interface.h" #include "reader.h" //图书管理模块 //图书类函数实现 void book::setno(int n) { no = n; } int book::getno() { return no; } void book::setname(char na[]) { strcpy_s(name, na); } char* book:: getname() { return name; } void book::borbook() { b_flag = 2; //借书标志 } void book::delbook() { b_del = 2; //删除标志 } void book::addbook(int no, char na[]) { setno(no); setname(na); b_flag = 1; b_del = 1; } //图书数据库类 bdatabase::bdatabase() { book b; //建立book类对象并b top = -1; //数组下标从0开始,此处top值置为-1可保证从数组第一个元素开始存储信息 fstream file("book.txt", ios::in);//打开文件进行读操作,若文件不存在则出错.输入输出指:内存与硬盘间的信息传递 while (1) { file.read((char*)&b, sizeof(b));//从文件中读取b个字符到char*指向的缓存中(book类对象b的地址) if (!file) //若读取到文件尾EOF,返回非0值(一般为1),结束书本数量的计数,关闭文件 break; top++; btarray[top] = b; } file.close(); } bdatabase::~bdatabase() { fstream file("book.txt", ios::out);//输出:内存->硬盘 for (int i = 0; i <= top; i++) { if (btarray[i].b_del == 1) file.write((char*)&btarray[i], sizeof(btarray[i])); } file.close(); } void bdatabase::addbooks() { book bk; //创建book类对象bk int no; //书号 char bname[20]; //书名 用数组存放 cout << "请输入书号:"; cin >> no; cout << endl << "请输入书名:"; cin >> bname; cout << endl; bk.b_flag = 1; bk.addbook(no, bname); //类中成员函数addbook(),设置书号与书名 修改标志 top++; btarray[top] = bk; return; //返回上个操作界面 } int bdatabase::findbooks(int suffix) { int no; cout << "请输入书号:"; cin >> no; for (int i = 0; i <= top; i++) { if (btarray[i].no == no && btarray[i].b_del == 1) { return i; } } return -1; } int bdatabase::findbooks() { int no; char value[6]; cout << "请输入书号:"; cin >> no; for (int i = 0; i <= top; i++) { if (btarray[i].no == no && btarray[i].b_del == 1) { if (btarray[i].b_flag == 1) strcpy_s(value, "在架"); if (btarray[i].b_flag == 2) strcpy_s(value, "借出"); cout << "书号:" << btarray[i].no << " " << "书名:" << btarray[i].name << " " << "图书状态:" << value << endl; return i; } } return -1; } void bdatabase::editbooks() { int cur; cur = findbooks(); if (cur == 1) { cout << "该书不存在" << endl; return; } cout << "当前图书信息--" << "书号:" << btarray[cur].no << " " << "书名:" << btarray[cur].name << endl; cout << endl; cout << "请继续操作以修改图书信息" << endl; cout << endl << "书名:"; cin >> btarray[cur].name; return; } void bdatabase::delbooks() { int cur; cur = findbooks(); if (cur == 1) { return; } if (btarray[cur].b_flag == 2) { //删除时判断图书是否借出 cout << "该图书已经借出,请归还后删除!" << endl; return; } btarray[cur].b_del = 2; return; } void bdatabase::listbooks() { char value[6]; for (int i = 0; i <= top; i++) { if (btarray[i].b_del == 1) { if (btarray[i].b_flag == 1) strcpy_s(value, "在架"); if (btarray[i].b_flag == 2) strcpy_s(value, "借出"); cout << "书号:" << btarray[i].no << "书名:" << btarray[i].name << "图书状态:" << value << endl; } } return; } void borrow_or_return(char br) { //借书、还书函数，参数br:判断 “借书”,“还书”. 1 借书 2 还书 int reader_ID = 0; //读者id int book_ID = 0; //书的id int rsuffix, bsuffix; bdatabase t_bd; rdatabase t_rd; if (br == '1') { //借书 rsuffix = t_rd.findreaders(reader_ID); bsuffix = t_bd.findbooks(book_ID); if (rsuffix == -1 || bsuffix == -1) return; if (t_bd.btarray[bsuffix].b_flag == 2) { cout << "图书已经借出,请选择其它图书" << endl; return; } t_bd.btarray[bsuffix].b_flag = 2; t_rd.rdarray[rsuffix].r_bor = 1; t_rd.rdarray[rsuffix].brbook = t_bd.btarray[bsuffix]; return; } if (br == '2') { rsuffix = t_rd.findreaders(reader_ID); bsuffix = t_bd.findbooks(book_ID); if (rsuffix == -1 || bsuffix == -1) return; if (t_rd.rdarray[rsuffix].brbook.no == t_bd.btarray[bsuffix].no) { t_bd.btarray[bsuffix].b_flag = 1; t_rd.rdarray[rsuffix].r_bor = 2; t_rd.rdarray[rsuffix].brbook = t_bd.btarray[bsuffix]; } else { cout << "请重新输入,读者借阅图书书号错误" << endl; return; } return; } } void booksmanage() { char in; bdatabase bd; do { system("pause"); system("cls");//切换UI时,刷新缓冲区当前内容,完成下次更新 UI(); Book_Maintenance_Interface(); cin >> in; switch (in) { case'1': bd.addbooks(); break; case'2': bd.editbooks(); break; case'3': bd.delbooks(); break; case'4': bd.findbooks(); break; case'5': bd.listbooks(); break; case'6': break; default: cout << "In Put Error!!! Please try again!!!" << endl; } } while (in != '6'); return; }