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

typedef struct ListNode {
   int data;
   struct ListNode *next;
} ListNode;


int main() {
   printf("Hello World!\n");

   struct ListNode *head = NULL;

   for (int i = 0; i < 5; i++) {
      struct ListNode *temp = (struct ListNode *) malloc (sizeof(struct ListNode));
      temp->data = i;
      temp->next = head;
      head = temp;
   }

   struct ListNode *p = head;
   while(p != NULL) {
      printf("node - %d\n",p->data);
      p = p->next;
   }


   //free the space
      

}