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

typedef struct
{
	int item_id;
	unsigned char *item_name;
	double item_price;
	int item_stock_count;
} item_data;

void print_item(item_data *item_ptr)
{
	printf("item_id: %i,\n item_name: %s,\n item_price: %g,\n item_stock: %i\n",
		item_ptr->item_id,
		item_ptr->item_name,
		item_ptr->item_price,
		item_ptr->item_stock_count);
}

int main()
{
	GSList *items_list1 = NULL, *iterator = NULL;
	item_data *tmp_item = NULL;
	int i = 0;
	char *tmp_str = NULL, *tmp_str2 = NULL;
	
	tmp_str = malloc(1);

	for(i = 0; i < 3; i++)
	{
		sprintf(tmp_str, "%d", i);

		tmp_str2 = (unsigned char *)malloc(100);
		if (tmp_str2 == NULL)
		{
			fprintf(stderr, "Couldn't allocate memory\n");
			return -1;
		}

		strcpy(tmp_str2, "item_num num: ");
		strcat(tmp_str2, tmp_str);


		// ***Allocate memory using glib***
		tmp_item = g_new(item_data, 1);
		if (tmp_item == NULL)
		{
			fprintf(stderr, "Couldn't allocate memory\n");
			return -1;
		}

		tmp_item->item_id = i;
		tmp_item->item_name = tmp_str2;
		tmp_item->item_price = 100*(i+1);
		tmp_item->item_stock_count = 10*(i+1);

		items_list1 = g_slist_append(items_list1, tmp_item);
	}

	// Clean up
	for(iterator = items_list1; iterator != NULL; iterator=iterator->next)
	{
		free(((item_data*)iterator->data)->item_name);
		g_free(iterator->data);
	}

	for(iterator = items_list1; iterator != NULL; iterator=iterator->next)
		print_item((item_data*)iterator->data);

	return 0;
}