voila j'ai un code qui à mes yeux est parfait mais j'ai quand même deux erreurs de compilation.

voici le code
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#include<iostream>
 
using namespace std;
 
template<class T>class List
{
 // Attributes
 public:
	  // Implementation
 List()
{
  // initializes the list object for the first time
 
  _first_node = NULL;
  _number_of_nodes = 0;
}
  ~List();
 
  class invalid_position {};
  class out_of_memory {};
    // supported exceptions
  int get_number_of_items() const;
    // returns the list size
 
 // Operations
  void add(T* item);
    // add the specified item at the end of list
 
  void add(int at_position, T* item);
    // add the specified item at specified position
 
  void remove(int at_position);
    // remove and deletes the item stored at specified position
 
  T* get_item(int at_position);
    // returns the item stored at specified position
 
 
 
 
 protected:
  class T_Node
  {
  public:
    T_Node(T* item, T_Node* next_node)
    {
      _item = item;
      _next_node = next_node;
    }
 
    ~T_Node()
    {
      delete _item;
    }
 
    T* _item;
    T_Node* _next_node;
  };
 
  public:
 
    // this class is used internally to implement a single linked list
     T_Node* _first_node;
    // first node of the linked list
 
  int _number_of_nodes;
    // number of items stored in list
 
  T_Node* find_node(int node_position) ;
    // helper function to retrieve an indexed node
 
};
 
 
 
 
template<class T>List::~List()
{
  // deletes all stored items
 
  while (_number_of_nodes > 0)
    remove(0);
}
 
template<class T>inline int List::get_number_of_items()
{
  // returns list size
 
  return _number_of_nodes;
}
 
template<class T>inline void List::add(T* item)
{
  // adds an item at list tail
 
  add(_number_of_nodes, item);
}
 
template <class T> void List::add(int at_position, T* item)
{
  // adds an item at specified position
  // throws an out_of_memory exception in case of low system resources
  //  or an invalid_position if insertion at specified position is 
  //  impossible
 
  if (at_position == 0)
  {
    _first_node = new T_Node(item, NULL);
 
    if (_first_node == NULL)
      throw out_of_memory();
  }
  else
  {
    T_Node* previous_node = find_node(at_position - 1);
    // NOTE: find_node() can throw an invalid_position exception
 
    T_Node* next_node = previous_node->_next_node;
 
    previous_node->_next_node = new T_Node(item, next_node);
 
    if (previous_node->_next_node == NULL)
      throw out_of_memory();
  }
 
  _number_of_nodes++;
}
 
template <class T> void List::remove(int at_position)
{
  // removes and deletes the item indexed by the at_position value
  // throws an invalid_position if no item is available at specified
  //  position
 
  T_Node* node_to_delete;
 
  if (at_position == 0)
  {
    node_to_delete = _first_node;
    _first_node = node_to_delete->_next_node;
  }
  else
  {
    T_Node* previous_node = find_node(at_position - 1);
    // NOTE: find_node() can throw an invalid_position exception
 
    node_to_delete = previous_node->_next_node;
    previous_node->_next_node = node_to_delete->_next_node;
  }
 
  delete node_to_delete;
  _number_of_nodes--;
}
 
template<class T> inline T* List::get_item(int at_position) const
{
  // returns the requested item
  // throws an invalid_position if no item is available at specified
  //  position
 
  T_Node* node = find_node(at_position);
  return node->_item;
}
 
template <class T>List::T_Node* List::find_node(int node_position) const
{
  // searches (by index) a node in the internal single linked list
  // throws an invalid_position exception if no item found
 
  if (node_position < 0)
    throw invalid_position();
 
  T_Node* node = _first_node;
  int node_index = 0;
 
  while (node_index < node_position)
  {
    if (node == NULL)
      throw invalid_position();
 
    node = node->_next_node;
    node_index++;
  }
 
  return node;
}
 
int main()
{
 
}
et voici les erreurs
Code : Sélectionner tout - Visualiser dans une fenêtre à part
1
2
xxx00L.cpp:77: error: syntax error before `::' token
xxx00L.cpp:78: confused by earlier errors, bailing out