C++实现图书管理系统最新版

#include<iostream>
#include<stdio.h>
#include <stdlib.h>
#include<string.h>
#include <cstring>
#include<windows.h>
#include<vector>
#define bookmaxrepertory 99
using namespace std;
class common{
public:
    int id;
    char title[66];
    char author[66];
    common(){
    }
    common(int _id,char _title[],char _author[]){
        id = _id;
        strcpy(title , _title);
        strcpy(author , _author);
    }
};

class book:public common{
public:
    char publisher[66];
    int pagenumber;
    book(){}
    book(int _id,char _title[],char _author[],char _publisher[],char _isbnnumber[],int _pagenumber){
        common(_id,_title,_author);
        strcpy(publisher,_publisher);
        pagenumber = _pagenumber;
    }
};

class medialibrarymanagesystem{
public:

    medialibrarymanagesystem(){
        nowbooktotal = 0;
    }

    void _run(){
        readdatabyfile();
        printf("程序加载中");
        for (int i = 0; i < 10; i++) {
            sleep(100);    /* windows 使用sleep，参数为毫秒 */
            printf(".");
            fflush(stdout);//强制刷新缓存，输出显示
        }
        printf("\n");
        system("cls");
        int cmd;
        while(true){
            cout<<home_menu<<endl;
            cout<<"请输入你需要执行的命令序号:";cin>>cmd;
            if(cmd == 0){
                _exit();
            }
            system("cls");
            switch(cmd){
                case 1:
                    addbook();
                    break;
                case 2:
                    querygoods();
                    break;
                case 3:
                    showgoods();
                    break;
                case 4:
                    updategoods();
                    break;
                case 5:
                    deletegoods();
                    break;
                default:
                    cout<<"输入的指令有误!请重新输入!"<<endl;
            }
            system("pause");
            system("cls");

        }
    }





private:

    const string home_menu =
    "\n********************************** 图书管理系统 **********************************\n"
    "*                                                                                  *\n"
    "*                                                                                  *\n"
    "*                                     1.添加                                       *\n"
    "*                                                                                  *\n"
    "*                                     2.查询                                       *\n"
    "*                                                                                  *\n"
    "*                                     3.显示图书库                                 *\n"
    "*                                                                                  *\n"
    "*                                     4.修改图书库                                 *\n"
    "*                                                                                  *\n"
    "*                                     5.删除                                       *\n"
    "*                                                                                  *\n"
    "*                                     0.退出                                       *\n"
    "*                                                                                  *\n"
    "*                                                                                  *\n"
    "************************************************************************************\n";

    const string query_goods_menu =
    "\n************************************ 图书查询 ************************************\n"
    "*                                                                                  *\n"
    "*                                                                                  *\n"
    "*                                    1.按标题查询                                  *\n"
    "*                                                                                  *\n"
    "*                                    2.按编号查询                                  *\n"
    "*                                                                                  *\n"
    "*                                    0.退出                                        *\n"
    "*                                                                                  *\n"
    "*                                                                                  *\n"
    "************************************************************************************\n";

    book booklist[bookmaxrepertory];

    int nowbooktotal;

    ///添加图书
    void addbook(){
        book book;
        cout<<"请输入编号:";cin>>book.id;
        cout<<"请输入标题:";cin>>book.title;
        cout<<"请输入作者:";cin>>book.author;
        cout<<"请输入出版社:";cin>>book.publisher;
        cout<<"请输入页数:";cin>>book.pagenumber;
        if(getbookbyid(book.id) != -1){
            cout<<"添加失败! 添加编号重复! 请重新添加!"<<endl;
        }else if(nowbooktotal == bookmaxrepertory){
            cout<<"添加失败! 图书库已满!"<<endl;
        }else{
            booklist[nowbooktotal ++] = book;
        }
    }

    /*  查询图书  */
    void querygoods(){
        int cmd;
        while(true){
            cout<<query_goods_menu<<endl;
            cout<<"请输入你需要执行的命令序号:";cin>>cmd;
            if(cmd == 0){
                break;
            }
            system("cls");
            switch(cmd){
                case 1:
                    querybytitle();
                    break;
                case 2:
                    querybyid();
                    break;
                default:
                    cout<<"输入的指令有误!请重新输入!"<<endl;
            }
            system("pause");
            system("cls");

        }
    }


    ///按标题查询
    void querybytitle(){
        int cmd;
        char title[66];
        cout<<"请输入标题:";cin>>title;
        getbookbytitle(title);
    }

    ///book
    void getbookbytitle(char title[]){
        bool flag = true;
        printf("%-6s%-10s%-10s%-10s%-10s%\n","编号","标题","作者","出版社","页数");
        for(int i = 0;i < nowbooktotal;i ++){
            if(strcmp(booklist[i].title,title) == 0){
                flag = false;
                printf("%-6d%-10s%-10s%-10s%-10d\n",booklist[i].id,booklist[i].title,booklist[i].author,booklist[i].publisher,booklist[i].pagenumber);
            }
        }
        if(flag){
            printf("\n\n空的!\n\n");
        }
    }


    ///按编号查询
    void querybyid(){
        int cmd,i,id;
        cout<<"请输入id:";cin>>id;
        i = getbookbyid(id);
        if(i == -1){
            printf("查找不到!\n");
        }else{
            printf("%-6s%-10s%-10s%-10s%-10s\n","编号","标题","作者","评级","出版社","页数");
            printf("%-6d%-10s%-10s%-10s%-10d\n",booklist[i].id,booklist[i].title,booklist[i].author,booklist[i].publisher,booklist[i].pagenumber);
        }
    }

    ///book
    int getbookbyid(int id){
        int index = -1;
        for(int i = 0;i < nowbooktotal;i ++){
            if(booklist[i].id == id){
                index = i;
                break;
            }
        }
        return index;
    }

    /*  显示图书库  */
    void showgoods(){
        if(nowbooktotal == 0){
            printf("空的!\n");
        }else{
            printf("%-6s%-10s%-10s%-10s%-10s\n","编号","标题","作者","出版社","页数");
            for(int i = 0;i < nowbooktotal;i ++){
                printf("%-6d%-10s%-10s%-10s%-10d\n",booklist[i].id,booklist[i].title,booklist[i].author,booklist[i].publisher,booklist[i].pagenumber);
            }
        }
    }

    /*  修改图书  */
    void updategoods(){
        int cmd,id,i;
        cout<<"请输入你需要修改的图书编号:";cin>>id;
        i = getbookbyid(id);
        if(i == -1){
                cout<<"图书不存在!"<<endl;
        }else{
            cout<<"原图书信息为:"<<endl;
            printf("%-6s%-10s%-10s%-10s%-10s\n","编号","标题","作者","出版社","页数");
            printf("%-6d%-10s%-10s%-10s%-10d\n",booklist[i].id,booklist[i].title,booklist[i].author,booklist[i].publisher,booklist[i].pagenumber);
            book book;
            book.id = id;
            cout<<"请输入修改后的标题:";cin>>book.title;
            cout<<"请输入修改后的作者:";cin>>book.author;
            cout<<"请输入修改后的出版社:";cin>>book.publisher;
            cout<<"请输入修改后的页数:";cin>>book.pagenumber;
            booklist[i] = book;
        }
    }

    /*  删除图书  */
    void deletegoods(){
        int cmd,id,i;
        if(nowbooktotal == 0){
            cout<<"空的!"<<endl;
   return;
        }
        cout<<"请输入你需要删除的图书编号:";cin>>id;
        deletebook(id);
    }

    ///book
    void deletebook(int id){
        int index = getbookbyid(id);
        if(index == -1){
            cout<<"没有该图书!"<<endl;
        }else{
            for(int i = index;i < nowbooktotal - 1;i ++){
                booklist[i] = booklist[i + 1];
            }
            nowbooktotal --;
            cout<<"删除成功!"<<endl;
        }
    }

    /*  保存图书  */
    void savedatatofile(){
        ///book
        file *bookdb = fopen("booklist.txt", "wb");
        for (int i = 0; i < nowbooktotal; i++) {
            fwrite(&booklist[i], sizeof(book), 1, bookdb);
        }
        fclose(bookdb);
    }

    /*  读取图书  */
    void readdatabyfile(){
        ///book
        file *bookdb = fopen("booklist.txt", "rb");
        nowbooktotal = 0;
        book book;
        while (fread(&book, sizeof(book), 1, bookdb) == 1) {
            booklist[nowbooktotal++] = book;
        }
        fclose(bookdb);
    }

    void _exit(){
        savedatatofile();
        system("cls");
        printf("正在退出");
        for (int i = 0; i < 10; i++) {
            sleep(100); 
            printf(".");
            fflush(stdout);//强制刷新缓存，输出显示
        }
        system("cls");
        printf("已退出!");
        exit(1);
    }

};

int main(){
    medialibrarymanagesystem medialibrarymanagesystem;
    medialibrarymanagesystem._run();
    return 0;
}