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

typedef struct node_st {
  int element;
  struct node_st *next;
} Node;

Node *Push(Node *head, int e) {
  Node *n = (Node *) malloc(sizeof(Node));

  assert(n != NULL);  // crashes if false
  n->element = e;
  n->next = head;

  return n;
}

int main(int argc, char **argv) {
  Node *list = NULL;

  list = Push(list, 1);
  list = Push(list, 2);

  return 0;
}