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!

。!

。。

原文地址:https://www.cnblogs.com/gavanwanggw/p/6868225.html