#include <string>
#include <iostream>

using namespace std;

struct inventory_item {

	string name;
	int number;
	double cost;
	int num_in_inventory;
};

void print_item(const inventory_item item);
bool sell_item(inventory_item & to_sell);

void main() {

	//create a new inventory_item and
	//set its values
	inventory_item shirts;
	shirts.name = "Shirts";
	shirts.number = 1232;
	shirts.cost = 20.00;
	shirts.num_in_inventory = 10;

	//print the new item
	print_item(shirts);
	//sell one of the new item
	sell_item(shirts);
	//print the item again
	print_item(shirts);

	//create an array of inventory_items
	inventory_item items[2];
	items[0].name = "Hats";
	items[0].number = 1234;
	items[0].cost = 6.99;
	items[0].num_in_inventory = 15;

	items[1].name = "Jackets";
	items[1].number = 1235;
	items[1].cost = 59.99;
	items[1].num_in_inventory = 20;

	print_item(items[0]);
	sell_item(items[0]);
	print_item(items[0]);

}

/*
	A function to print all info about an item.
	input - the item to print
	output - none
*/
void print_item(const inventory_item item) {
		
	cout << "Item: " << item.name << endl;
	cout << "Item Number: " << item.number << endl;
	cout << "Cost: " << item.cost << endl;
	cout << "Number Remaining: " << item.num_in_inventory << endl;

}

/*
	A function to sell an item by reducing the number in the
	inventory by 1.  
	input - reference to an inventory_item
	output - true if item was sold, false otherwise
	What would happen if you left off the &?
	What would happen if you added const?
*/
bool sell_item(inventory_item & to_sell) {
	bool sell_ok = false;
	if(to_sell.num_in_inventory > 0) {
		to_sell.num_in_inventory = to_sell.num_in_inventory - 1;
		sell_ok = true;
	} else {
		sell_ok = false;
	}
	return sell_ok;
}