#include <stdio.h>
#include <stdlib.h>

/* ------------------------
   List element definition
   ------------------------ */
struct ListElem
{
   int              value;
   double           x1;
   double           x2;
   double           x3;
   double           x4;
   double           x5;
   double           x6;
   double           x7;
   struct ListElem* next;
};

struct ListElem* insertHead(struct ListElem* head, struct ListElem* elem)
{
   elem->next = head;		// make "elem" point to "head"

   return(elem);		// return address of new head
}

struct ListElem* deleteHead(struct ListElem* head)
{
   return(head->next);          // return address of new head
}



int main(int argc, char *argv[])
{
   struct ListElem* head;   // Head of list
   struct ListElem* p;      // Help variable to allocate new list element

   head = NULL;           // Empty list


   while (1)
   {
      p = malloc( sizeof(struct ListElem) ); 
      p->value = 123;			
      head = insertHead( head, p);		
      head = deleteHead( head );
   }

}