#include "stdafx.h"
#include <iostream>

using namespace std;

struct warr_entry{
    double var;
    warr_entry* next;
    warr_entry* prev;
};

class warr{
public:
    warr(){
        m_head.next=NULL;
        m_head.prev=NULL;
        m_head.var=0;
    }

    warr_entry get(int idx){
        warr_entry *c=&m_head;
        int i=0;
        while(c->next!=NULL&&i!=idx){
            c=c->next;
            i++;
        }
        return *c;
    }

    int get(warr_entry e){
        warr_entry *c=&m_head;
        int i=0;
        while(c->next!=NULL&&c!=&e){
            i++;
            c=c->next;
        }
        return i;
    }

    warr_entry& operator[] (const int nIndex){
        return get(nIndex);
    };

    void add(double v){
        warr_entry *a=new warr_entry;
        a->next=NULL;
        warr_entry *l=last();
        l->var=v;
        l->next=a;
        a->prev=a;
    };

    int rem(int idx){
        warr_entry *c = &m_head;
        int i=0;
        while(c->next!=NULL && i!=idx){
            i++;
            c=c->next;
        }
        c->prev->next=c->next;
        delete &c;
        return i;
    };

    warr_entry first(){
        return m_head;
    }

    warr_entry *last(){
        warr_entry *c=&m_head;
        while(c->next!=NULL){
            c=c->next;
        }
        return c;
    };

    int size(){
        int cs=0;
        warr_entry *c=&m_head;
        while(c->next != NULL){
            cs++;
            c=c->next;
        }
        return cs;
    };

    void printall(){
        warr_entry* e=&m_head;
        while(e->next != NULL){
            cout<<e->var<<endl;
            e=e->next;
        }
    }

private:
    warr_entry m_head;
};

int main(int argc, _TCHAR* argv[])
{
    warr w;
    w.add(10293);
    w.add(212);
    w.add(1.1021);
    cout<<w.get(1).var<<endl;
    cout<<w[1].var<<endl;
    w.printall();
    cout<<w.size()<<endl;
    system("PAUSE");
    return 0;
}