/*
 * THIS IS THE IMPLEMENTATION FILE FOR THE INVENTORY MODULE.
 * MAKE SURE YOU DOCUMENT IT.
 */

#include <stdio.h>  /* For opening/closing, reading files */
#include <string.h>

/* ADD ANY OTHER HEADERS YOU NEED! */

/*
 * Get the constants, types and prototypes associated
 * with the inventory module.
 */
#include "h3invent.h"

/*
 * PROTOTYPES AND COMMENTS FOR ANY HELPER FUNCTIONS GO HERE.
 */

/*
 * Function: InventoryInitialize
 * --------------------------
 * HERE WE'VE PUT DOCUMENTATION RELEVANT TO HOW THIS FUNCTION
 * RELATES TO THE IMPLEMENTATION OF INVENTORY.  INFORMATION
 * ABOUT HOW TO USE THIS FUNCTION AND A MORE ABSTRACT VIEW OF
 * WHAT IT DOES SHOULD ALREADY BE IN THE INTERFACE FILE.
 *
 * We make the inventory empty by initializing the 'howmany' field
 * of the inventory structure to 0.
 */

void InventoryInitialize(inventoryT *listP)
{
  listP->howmany = 0;

  /*
   * IF YOU USE A METHOD OF MARKING DELETED ITEMS (see
   * InventoryRemoveItems below), YOU MAY WANT TO DO MORE
   * IN THIS INITIALIZE FUNCTION.
   */
}

/*
 * Function: InventoryAddItems
 * --------------------------
 * I ADD A NUMBER OF UNITS OF AN ITEM TO THE LIST.  YOU DOCUMENT ME
 * AND FILL IN MY CODE.
 */

int InventoryAddItems(inventoryT *listP, itemT item)
{

}

/*
 * Function: InventoryRemoveItems
 * --------------------------
 * I REMOVE A CERTAIN NUMBER OF UNITS OF AN ITEM FROM THE LIST.
 * YOU DOCUMENT ME AND FILL IN MY CODE.
 */

int InventoryRemoveItems(inventoryT *listP, itemT item)
{

  /*
   * WHEN YOU REMOVE AN ITEM FROM INVENTORY COMPLETELY (I.E., WHEN
   * ITS COUNT GOES TO ZERO), YOU'll EITHER HAVE TO MOVE ALL THE ITEMS
   * AFTER IT DOWN IN THE ARRAY OR DECIDE ON A WAY TO MARK ARRAY LOCATIONS
   * AS BEING FREE FOR REUSE.
   */
}

/*
 * Function: InventoryGetPrice
 * --------------------------
 * I RETURN THE PRICE OF AN ITEM.  YOU DOCUMENT ME AND FILL IN MY CODE.
 */

int InventoryGetPrice(inventoryT *listP, itemT item)
{

}

/*
 * Function: InventorySetPrice
 * --------------------------
 * I CHANGE THE PRICE OF AN ITEM.  YOU DOCUMENT ME AND FILL IN MY CODE.
 */

int InventorySetPrice(inventoryT *listP, itemT item)
{

}

/*
 * Function: InventoryReadFromFile
 * --------------------------
 * I READ IN A BUNCH OF INVENTORY RECORDS FROM A FILE.  YOU DOCUMENT
 * ME AND FILL IN MY CODE.
 */

int InventoryReadFromFile(inventoryT *listP, char filename[])
{

}
/*
 * DEFINITIONS OF ANY HELPER FUNCTIONS GO AFTER HERE.
 */