Re: Problem with list

I'm doing a template class to make an ordered list.

I created a class Person to make an agenda.

When I create a new person, there's no problem but when I try to add
it to the list it throws a lot of errors.

Can someboy help me! Thanks!

#include <iostream>
#include <string>

template <typename T>
class List
{
   class Node
   {
      T data;
      Node* next;
      public:
             Node(T data)
             {
                this->data = data;
                next = (Node*)NULL;
             }
             T getData() const
             {
                return data;
             }
             Node* getNext() const
             {
                return next;
             }
             void setData(T data)
             {
                this->data = data;
                return;
             }
             void setNext(Node* next)
             {
                this->next = next;
                return;
             }
   };

   Node* head;
   size_t nodes;

   public:
          List()
          {
             head = (Node*)NULL;
             nodes = 0;
          }

          void insert(T data)
          {
             Node* p = new Node(data);

             if(p!=(Node*)NULL)
             {
                if(nodes==0)
                    head = p;
                else if(head->data > data)
                   p->setNext(head);
                else
                {
                   bool done=false;
                   Node* q = head;

                   while(head!=(Node*)NULL && !done)
                      if(head->getNext()->getData() < data)
                         done = true;
                      else
                         head = head->getNext();

                   if(done)
                      q->setNext(p);
                   else
                      p->setNext(q);
                }
                ++nodes;
             }
          }
          size_t size() const
          {
              return nodes;
          }

};

class Person
{
   std::string name;
   std::string lastname;
   std::string telephone;
   public:
          Person(std::string n, std::string l, std::string
t):name(n),lastname(l),telephone(t){};
          std::string getName() const { return name; }
          std::string getLastname() const { return lastname; }
          std::string getTelephone() const { return telephone; }
          void setName(std::string name) { this->name = name;
return; }
          void setLastname(std::string name) { this->lastname =
lastname; return; }
          void setTelephone(std::string name) { this->telephone =
telephone; return; }
          friend bool operator<(Person,Person);
          friend bool operator>(Person,Person);

};

bool operator<(Person a, Person b)
{
   return a.lastname < b.lastname;

}

bool operator>(Person a, Person b)
{
   return a.lastname > b.lastname;

}

int main()
{
   List<Person> agenda;

   Person p("John","Doe","555-123456");

   agenda.insert(p);

   return 0;

}