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  • s1考试 图书管理系统 结构体版

    #include <iostream>
    #include <string>
    #include <cstdio>
    #include <cstdlib>
    #include <iomanip>
    using namespace std;
    struct Library
    {
        long number;//编号
        string bookname;//书名
        string author;//作者
        string press;//出版社
        int price;//价格
    };
    Library book[10000000];//
    int size=0;
    int count=0;
    void welcome();
    void increase();//添加图书
    void find();
    void find_1();//查找图书
    void find_2();
    void find_3();
    void find_4();
    void find_all();//查找所有图书
    void display(int i);
    int main()
    {
        welcome();
        return 0;
    }
    void welcome()
    {
        int n;
        cout<<"*---------------------------*"<<endl;
        cout<<"|--------图书管理系统-------|"<<endl;
        cout<<"|---------------------------|"<<endl;
        cout<<endl;
        cout<<"|---------------------------|"<<endl;
        cout<<"|--------1.添加图书---------|"<<endl;
        cout<<"|--------2.查找图书---------|"<<endl;
        cout<<"|--------3.查找所有图书-----|"<<endl;
        cout<<"|--------4.退出系统---------|"<<endl;
        cout<<"*---------------------------*"<<endl;
        cout<<"请输入指令:";
        cin>>n;
        switch(n)
        {
        case 1:
            increase();
            cout<<endl;
            welcome();
            break;
        case 2:
            find();
            welcome();
            break;
        case 3:
            find_all();
            welcome();
            break;
        default:
            break;
        }
    }
    void increase()
    {
        char m,n,y;
        cout<<"输入图书编号:";
        cin>>book[size].number;
        cout<<"输入书名:";
        cin>>book[size].bookname;
        cout<<"输入作者姓名:";
        cin>>book[size].author;
        cout<<"输入出版社:";
        cin>>book[size].press;
        cout<<"输入价格:";
        cin>>book[size].price;
        cout<<"加入成功!"<<endl;
        display(size);
        size++;
        count+=1;
    
        cout<<"是否继续加入图书(是y,否n)"<<endl;
        cin>>m;
        if(m=='y')
            increase();
        if(m=='n')
            welcome();
    }
    void display(int i)
    {
        cout<<"+-----------------------------------------------------------------------+"<<endl;
        cout<<setiosflags(ios::left)<<"+"<<setw(10)<<"图书编号"<<setw(1)<<'|'<<setw(10)<<"书名"<<setw(1)<<'|'<<setw(20)<<"作者"<<setw(1)<<'|'<<setw(15)<<"出版社"<<setw(1)<<'|'<<setw(10)<<"价格"<<setw(1)<<'|'<<endl;
        cout<<"+-----------------------------------------------------------------------------+"<<endl;
        cout<<setiosflags(ios::left)<<"+"<<setw(10)<<book[i].number<<setw(1)<<'|'<<setw(10)<<book[i].bookname<<setw(1)<<'|'<<setw(20)<<book[i].author<<setw(1)<<'|'
            <<setw(15)<<setiosflags(ios::fixed)<<setprecision(2)<<book[i].press<<setw(9)<<setw(1)<<'|'<<setw(10)<<book[i].price<<setw(1)<<'|'<<endl;
        cout<<"+-----------------------------------------------------------------------+"<<endl;
    }
    void find()
    {
        int n;
        cout<<"*---------------------------------*"<<endl;
        cout<<"|--------1.以图书编号查找---------|"<<endl;
        cout<<"|--------2.以图书名查找-----------|"<<endl;
        cout<<"|--------3.以作者名查找-----------|"<<endl;
        cout<<"|--------4.以出版社查找-----------|"<<endl;
        cout<<"|--------5.回到主菜单-------------|"<<endl;
        cout<<"*---------------------------------*"<<endl;
        cout<<"请输入指令:";
        cin>>n;
        switch(n)
        {
        case 1:
            find_1();
            break;
        case 2:
            find_2();
            break;
        case 3:
            find_3();
            break;
        case 4:
            find_4();
            break;
        default:
            welcome();
            break;
        }
    }
    void find_1()
    {
        long num;
        cout<<"输入要查找的图书编号:"<<endl;
        cin>>num;
        bool flag=false;
        int n;
        for(n=0; n<=size; n++)
        {
            if(num==book[n].number)
            {
    
                flag=true;
                break;
            }
        }
        if(flag)
            display(n);
        else
            cout<<"没有查询结果,或该书不存在!"<<endl;
    }
    void find_2()
    {
        string name;
        cout<<"输入要查找的图书名:"<<endl;
        cin>>name;
        bool flag=false;
        int n;
        for(n=0; n<=size; n++)
        {
            if(name==book[n].bookname)
            {
    
                flag=true;
                break;
            }
        }
        if(flag)
            display(n);
        else
            cout<<"没有查询结果,或该书不存在。"<<endl;
    }
    void find_3()
    {
        string zuozhe;
        cout<<"输入要查找的作者名:"<<endl;
        cin>>zuozhe;
        bool flag=false;
        int n;
        for(n=0; n<=size; n++)
        {
            if(zuozhe==book[n].author)
            {
    
                flag=true;
                break;
            }
        }
        if(flag)
            display(n);
        else
            cout<<"没有查询结果。或该书不存在!"<<endl;
    }
    void find_4()
    {
        string chuban;
        cout<<"输入要查找的出版社名:"<<endl;
        cin>>chuban;
        bool flag=false;
        int n;
        for(n=0; n<=size; n++)
        {
            if(chuban==book[n].press)
            {
    
                flag=true;
                break;
            }
        }
        if(flag)
            display(n);
        else
            cout<<"没有查询结果,或该书不存在!

    "<<endl; } void find_all() { for(int n=0; n<size; n++) { display(n); } }

    感悟:唉!

    !!!


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  • 原文地址:https://www.cnblogs.com/ldxsuanfa/p/10625475.html
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