/**********
 * linked_list.c
 *
 * a linked list in C.
 *
 * Jim Mahoney | cs.bennington.college | MIT License | March 2021
 ******/

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

typedef struct _node *node;
struct _node {
  int value;
  node next;
};

node new_node(int value){
  node n = malloc(sizeof(struct _node));
  n->value = value;
  n->next = NULL;
  return n;
}

void free_node(node n){
  free(n);
}

node array_to_nodes(int* values, int count){
  int i;
  node root, previous, n;
  for (i=0; i<count; i++){
    n = new_node(values[i]);
    if (i != 0){
      previous->next = n;
    }
    else {
      root = n;
    }
    previous = n;
  }
  return root;
}

void print_nodes(node n){
  printf("[");
  while (n){
    printf("%d, ", n->value);
    n = n->next;
  }
  printf("]\n");
}

int main(){
  int numbers[] = {1, 2, 3, 4};
  node root = array_to_nodes(numbers, 4);
  print_nodes(root);
  return 0;
}