Re: Problem with Linked List

I made a linked list that can add an item, go to the first item, and
get the current, next, and previous item in the list. When I compile
it, there are no errors, but it overloads. Here is the code:

//fnamelink.h------------------------------------------------------
class flink
{
public:
   char data[_MAX_DIR+1];
   flink* previous;
   flink* next;
   flink()
   {
       previous = NULL;
       next = NULL;
   }
};

class fnamelink
{
private:
   flink* first;
public:
   fnamelink()
   { first = NULL; }
   void addItem(char* foldername);
   char* getCurrent();
   char* getPrevious();
   char* getNext();
   char* getFirst();
   void deleteLink();
   ~fnamelink()
   {
       getFirst();
       deleteLink();
   }
};

//
fnamelink.cpp-------------------------------------------------------------------------------------------------
#include <string.h>
#include <malloc.h>
#include "StdAfx.h" //<--Includes #include "fnamelink.h"

void fnamelink::addItem(char* foldername)
{
   flink* newlink = new flink;
   memset(newlink->data, NULL, sizeof(newlink->data));
   strcpy(newlink->data, foldername);
   newlink->previous = first;
   if(first)
       first->next = newlink;
   first = newlink;
}

char* fnamelink::getCurrent()
{
   flink* current = first;
   if(current != NULL)
       return current->data;
   else
       return NULL;
}

char* fnamelink::getPrevious()
{
   flink* current = first;
   current = current->previous;
   if(current->previous == NULL)
   {
       first = current;
       return NULL;
   }
   if(current->previous != NULL)
       return current->data;
   else
       return NULL;
}

char* fnamelink::getNext()
{
   flink* current = first;
   if((current = current->next) == NULL)
   {
       return NULL;
   }
   if(current != NULL)
       return current->data;
   else
       return NULL;
}

char* fnamelink::getFirst()
{
   flink* current = first;
   if(current)
   {
=> while(current->previous != NULL)
       {
           current = current->previous;
       }
   }
   first = current;
   if(first)
       return first->data;
   else
      return NULL;
}

void fnamelink::deleteLink()
{
   int numToDel = 0;
   flink* current = first;
   if(current->next)
   {
      while(current->next != NULL)
      {
           current = current->next;
           first = current;
           numToDel++;
       }
       while((numToDel) >= 0)
       {
           numToDel--;
           first = first->previous;
           free(current);
           current = first;
       }
       free(current);
   }
   else
   {
       first = first->previous;
       free(current);
   }
}

The '=>' I placed in the code was the exception the debugger pointed
out, but I can't seem to find a problem with it. Any help would be
greatly appreciated.