#include <algorithm>
#include "inventory.h"


std::ostream& operator<< (std::ostream& out, const Item& item) {
// COMPLETE
}

// A customer order an item
void Inventory::order(int id) {
  // COMPLETE
}

// Receive a shipment 
void Inventory::shipped(int id) {
  // COMPLETE
}

int main(void) {
  Inventory inventory;
  inventory.order(1);
  inventory.order(2);
  
  inventory.shipped(1);
  inventory.shipped(2);

  return 0;
}