#include <iostream>
#include <fstream>

using namespace std;

int main ()
{
   struct ListNode {
      int data;
      ListNode *next;
   };

   ifstream inFile;
   inFile.open("numbers.txt");

   ListNode *head = NULL;

   int num;
  
   inFile >> num;
   while (inFile)
   {
      cout << num << endl;

      ListNode *temp = new ListNode;
      temp->data = num;
      temp->next = head;
      head = temp;
      
      inFile >> num;
   }

   cout << " ---------------------------" << endl;

   ListNode *p = head;
   while (p != NULL)
   {
      cout << p->data << endl;
      p = p->next;
   }

   while (head != NULL) {
      p = head;
      head = head->next;
      delete p;
   }

cout <<"after delete list" << endl;
   p = head;
   while (p != NULL)
   {
      cout << p->data << endl;
      p = p->next;
   }
   return 0;

}