#include<iostream>
#include<conio.h>
#include<fstream>
#include<string>
using namespace std;
class Restaurant
{
    int number,price,amount;
    string name;
public:
    void Set_Value(int n,string nm,int p,int a)
    {
        number = n;
        name = nm;
        price = p;
        amount = a;
    }
    void show_menu(int i)
    {
        cout<<"#"<<i<<endl;
        cout<<"Name : "<<name<<endl;
        cout<<"Price : "<<price<<endl;
        cout<<"Amount : "<<amount<<endl;
    }
    void show_Bill(int Q)
    {
        cout<<"Name : "<<name<<endl;
        cout<<"quantity: "<<Q<<endl;
        cout<<"Total Bill : "<<price*Q<<endl<<endl;
        cout<<"Thank you!";
    }

};
int main()
{
    Restaurant Manager[20];
    int items,choose,i,v2;
    ofstream savedMenu;

    cout<<"1. Add new items\n"<<"2. Skip"<<endl;
    cin>>v2;
    if(v2==1)
    {
        cout<<"How many items: ";
        cin>>items;
        savedMenu.open("Restaurant Management.txt",ios::app);

        for(int i=1; i<=items; i++)
        {
            int item_no,number,price,amount;
            string name;

            cout<<"Item number: #";
            cin>>item_no;
            savedMenu<<"#"<<item_no<<endl;
            cout<<"Name : ";
            cin>>name;
            savedMenu<<"Name : "<<name<<endl;
            cout<<"Price : ";
            cin>>price;
            savedMenu<<"Price : "<<price<<endl;
            cout<<"Amount : ";
            cin>>amount;
            savedMenu<<"Amount : "<<amount<<endl;
            cin.ignore();
            Manager[i].Set_Value(number,name,price,amount);
        }
        savedMenu.close();
    }

    cout<<"===================================="<<endl;
    cout<<"   Welcome to Restaurant"<<endl<<endl;
    cout<<"1. See all"<<endl<<"2. Select "<<endl<<endl;
    cout<<"select :";
    cin>>choose;
    if(choose==1)
    {
        fstream savedMenu("Restaurant Management.txt",ios::in);
        string line;
        while(getline(savedMenu,line))
        {
            cout<<line<<endl;
        }
        savedMenu.close();
    }
    cout<<"Select items : ";
    int selected_item;
    cin>>selected_item;

    int quntty;
    cout<<"select quantity : ";
    cin>>quntty;
    cout<<"\nYou have selected : #"<<selected_item<<endl;
    Manager[selected_item].show_Bill(quntty);
    getch();
    return 0;
}