po_kolos

#include <iostream>
#include <exception>

using namespace std;

// to tylko do testow
//class EndOfList: public exception
//{
//public:
 //   virtual const char* what()
 //   {
 //       return "EndOfList exception happened!";
 //   }
//};

template <class T>
class ElementListy
{
public:
    void setnext() = 0;
    ElementListy* next() = 0;
    T getvalue() = 0;
};

template <class T>
class MyElement: public ElementListy
{
protected:
    const T value;
    MyElement* next;
public:
    MyElement(T value)
    {
        this->value = value;
    }
    void setnext(MyElement el)
    {
        next = &el;
    }
    MyElement* next()
    {
        return next;
    }
    T getvalue()
    {
        return value;
    }

};

template <class X>
class Lista
{
protected:
    MyElement* first;
    MyElement* last;
    MyElement* current;
public:
    Lista(MyElement mel)
    {
        first = &mel;
    }
    void addElement(MyElement newelem)
    {
        last = &newelem;
    }
    X getFirstValue()
    {
        return first->getvalue();
    }
    X getNextValue()
    {
        if(current == last)
        {
            EndOfList eol;
            throw eol;
        }
        return current->next->getvalue();
    }
};

int main()
{
    try
    {
        Lista<string> lista;
        lista = Lista(MyElement("Ala ma kota"));
        lista.addElement(MyElement("Jarek ma psa"));
        ElementListy odczyt = lista.getFirstValue();
    }
    catch(EndOfList &e)
    {
        cout << "Blad! Poza zakresem!" << endl;
    }

    cin.sync();
    cin.get();
    return 0;
}