#include <stdio.h>

struct Node
{
    int data;
    struct Node *link;
};

int main()
{
  struct Node nodes[50];
  struct Node *head = &nodes[0];
  struct Node *tail = head;
  int num_nodes_used = 1;

    int number = 0;

    do{
        printf("node # %d > ", num_nodes_used);
        fflush(stdout);
        scanf("%d", &number);
        if(number){
        tail->data = number;
        tail->link = &nodes[num_nodes_used++];
        printf("Tail data is %d\nTail address is%x\n", tail->data, tail);
        tail = tail->link;
        }
        tail->link = NULL;
    }while (number != 0);
    return 0;
}