linked list problems (newbie programmer)

 //mainRoom.cpp
#include <iostream.h> 
/////////////////////////////////////////////////////////////////////////////
#ifndef room
#define room
class Room 
{
 int  floor,number;
 char building; //'M','A','W','L' or ''
 
public:
//void Print(); // Print the Room
//Room();  // Constructor
void Room :: Print()
{
 cout << "Floor [" << floor << "]" << endl;
 cout << "Room [" << number <<"]" << endl;
 cout << "Building [" << building <<"]" << endl;
}
Room::Room()
{
 cout << "** Enter Room Details **" << endl;
 cout << "Input floor number ->";
 cin >>floor;
 cout << "Input room number ->";
 cin >>number;
 cout << "Input building ID  ->";
 cin >>building;
}
};
#endif
////////////////////////////////////////////////////////////////////////////////
#ifndef roomnode
#define roomnode
//#include "room.h"
class RoomNode
{
 Room room;
 RoomNode* p_next;
public:
 friend class RoomList;	 // make account list a friend 
 RoomNode(Room a, RoomNode *p_n);//constructor
}
RoomNode::RoomNode(Room a,*p_n)
: room(a)  //initializer list :)
{
 p_next=p_n;
};
#endif

///////////////////////////////////////////////////////////////////////////////
#ifndef rooml
#define rooml
//#include "room.h"
//#include "roomnode.h"
class RoomList{
 RoomNode *p_head;
public:
//void AddToHead(Room a);
// Print();
//RoomList();
void RoomList :: AddToHead(Room a)
{
 p_head = new RoomNode(a,p_head);
}
void RoomList :: Print()
{
RoomNode *p_temp = p_head;
 
 while (p_temp !=0)
  {
   p_temp->room.Print();
   p_temp = p_temp->p_next;
  }
}
RoomList::RoomList()
{
 p_head = 0;
}
};

#endif
////////////////////////////////////////////////////////////////////////////////
#ifndef roomnode
#define roomnode
//#include "room.h"
class RoomNode
{
 Room room;
 RoomNode* p_next;
public:
 friend class RoomList;	 // make account list a friend 
 RoomNode(Room a, RoomNode *p_n);//constructor
 
RoomNode::RoomNode(Room a, RoomNode *p_n)
: room(a)  //initializer list :)
{
 p_next=p_n;
}
};
#endif
////////////////////////////////////////////////////////////////////////////////
main()
{
RoomList al;
char choice;
do
 {
 cout << "\n(A)dd room, (P)rint, (Q)uit ->";
 cin >> choice;
 switch(choice)
  {
   case 'A' : { Room newRoom;
	   al.AddToHead(newRoom);
	   break;
		}
   case 'P' :  al.Print();
	   break;
		}
  
 }
 while (choice !='Q');
};

  
  class myClass
  {
    public:
  	myClass()   //constructor
  	{
  	   i = 0;
  	 }
  
     void printit()  
     {
  	  cout << i;
  	}
  
  private: 
     int i;
  
  }; //end class