#include <iostream>
#include <string>
#include <windows.h>
using namespace std;
struct node
{
    string name;
    double depth;
    node* next;
};

class list
{
    private:
            node *head, *tail;
public:
    list() //constructor
    {
        head=NULL;
        tail=NULL;
    }
    ~list()//destructor
    {

    }
void createnode (double value,string str)
{
    node *temp=new node;
    temp->depth=value;
    temp->name=str;
    temp->next=NULL;
    if(head==NULL)
    {
        head=temp;
        tail=temp;
        temp=NULL;
    }
    else
    {
        tail->next=temp;
        tail=temp;
    }
}
void display() //display all members
{
        node *temp=new node;
        temp=head;
        while(temp !=NULL)
        {
            cout << temp->name << '\t';
            cout << temp->depth << " | ";
            temp=temp->next;
        }
}
void insert_start (double value,string str) //insert to front
{
        node *temp=new node;
        temp->depth=value;
        temp->name=str;
        temp->next=head;
        head=temp;
}
void insert_position(int pos, double value, string str) //insert o selected position (position number, number, word)
{
        node *pre=new node;
        node *cur=new node;
        node *temp=new node;
        cur=head;
        for (int i=1;i<pos;i++)
        {
            pre=cur;
            cur=cur->next;
        }
        temp->depth=value;
        temp->name=str;
        pre->next-temp;
        temp->next=cur;
}
void delete_first () // delete first member
{
        node *temp=new node;
        temp=head;
        head=head->next;
        delete temp;
}
void delete_last() //delete last member
{
        node*current=new node;
        node *previous=new node;
        current=head;
        while(current->next!=NULL)
        {
            previous=current;
            current=current->next;
        }
        tail=previous;
        previous->next=NULL;
        delete current;
}
void menu()
    {
        cout << "==========================" << endl;
        cout << "1.Register workers" <<endl;
        cout << "2.Show workres in queue" << endl;

        cout << "0.quit" <<endl;
        cout << "==========================" << endl;


        int ch;
        cout << ":  ";
        cin>> ch;
        switch(ch)
        {
            ////////////////////////////////////////////// worker registration
            case 1:
                cout << "=========================="<< endl;
                cout << "how many workers: ";
                int wNum;
                cin >>wNum;
                for (int i = 0; i <wNum ; ++i)
                {
                    double depth;
                    string name;
                    cout << "workers name: ";
                        cin>> name;
                    cout << " desired depth: ";
                        cin>>depth;
                createnode(depth,name);
                }
                menu();
                break;
                ////////////////////////////////////////// worker display
            case 2:
            {
                cout << "==========================" << endl;
                cout << "workers in queue: " <<endl;
                cout << "==========================" << endl;
                display();
                cout << endl;
                cout << "==========================" << endl;
            }
            system("pause");
            cout <<endl;
            menu();
                break;
            ////////////////////////////////////////////////////// quit
            case 0:
            {
                cout << "quiting..." << endl;
            }
                break;
        }

    }
};






int main()
{
list obj;
obj.menu();
    return 0;
}