Test for BUILDLINKEDLIST

#include <stdio.h>
#include <stdlib.h>
#define newline printf("\n")
typedef struct node Node;
struct node{
 int data;
 Node* next;
};
void print_linked_list(Node **head){
	Node *current;
	for(current=*head; current != NULL; current = current->next){
		printf("%d ", current->data);
	}
	newline;
}
void build_linked_list(Node **head_ptr)
{

  int num;
	while(1)
    {

    //   new_node->data = num;
    //   new_node->next = NULL;
    //   *head_ptr = new_node;
        scanf("%d",&num);
        if(num == -1)
        {
            break;
        }
        else
        {
            Node* new_node = (Node*)malloc(sizeof(Node));
            new_node->data = num;
            new_node->next = *head_ptr;
            *head_ptr = new_node;
        }
    }
}
int main()
{
	Node* head = NULL;
	build_linked_list(&head);
	print_linked_list(&head);
}