#include<stdio.h>
#include<stdlib.h>
struct node
{
int data;
struct node *next;
};
void addFirst(struct node **head, int val)
{
//create a new node
struct node *newNode = malloc(sizeof(struct node));
newNode->data = val;
newNode->next = *head;
*head = newNode;
}
void printList(struct node *head)
{
struct node *temp = head;
//iterate the entire linked list and print the data
while(temp != NULL)
{
printf("%d->", temp->data);
temp = temp->next;
}
printf("NULL\n");
}
int main()
{
struct node *head = NULL;
addFirst(&head,10);
addFirst(&head,20);
addFirst(&head,30);
printList(head);
return 0;
}