Thread: need help with file I/O and double linked-list

I'm trying to set up a double linked-list, that is a linked-list within a linked-list. the structure looks like this:

Code:

struct Dat
{
      int acc;
      int spd;
      Dat *nextdat;
      Dat *prevdat;
};

struct Node
{
      char name [64];
      char pass [16];
      int avg_acc;
      int avg_spd;

      Dat *dat,
            *dat_h,
            *dat_t;

      Node *next,     
	*prev;
};

Node *node, //current node
         *list_h, //head
         *list_t; //tail

my problem is saving the entire structure to a file, and then being able to open it up later. Saving the initial linked-list isn't a problem. But the pointers within the first linked-list which create the second linked-list may be a problem. Also, I can't come up with a successful way to get the data from the file and back into a linked list. My initial idea was to set up an initial node, open the file, save the data from the first node to the initial node, then create a new node, save the next data to that node, and so on until the eof is encountered. The problem is getting the second linked-list into the file, and back out. Here is my attempt at saving the file:

Code:

void LList::SaveToFile ()
{
      int i;

      ofstream data ("data.dat");

      node = list_h;

      while (node)
      {
	data.write((char*)node, sizeof(Node));  			node = node->next;   //does this write the internal linked-list as well? 
      }

      data.close ();
}

Can anyone help me with the syntax for this file operation or point me somewhere that describes this type of problem?