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

typedef struct list_elem
{
    struct list_elem *next;
    int id;
    unsigned price;
} list_elem;

typedef struct customer_record
{
    char name[32];
    char address[32];
} customer_record;

typedef struct large_struct
{
    int             some_integer;
    long            array[32];
    list_elem       elem;
    customer_record customer;
} large_struct;

typedef struct order
{
    customer_record     *customer;
    list_elem           *item_head;
    struct large_struct  something_large;
} order;

void print_item(list_elem *print)
{
    printf("Id: %d\n", print->id);
    printf("Price: %d\n", print->price);
}

void print_order(order *print_order)
{
    list_elem *curr = print_order->item_head;

    printf("Name: %s\n", print_order->customer->name);
    printf("Address: %s\n", print_order->customer->address);
    printf("Items:\n");

    while (curr != NULL)
    {
        print_item(curr);
        curr = curr->next;
    }

}

void init_large_struct(struct large_struct *large)
{
    int i;

    large->some_integer = 45054;
    for (i = 0; i < 32; i++)
        large->array[i] = i;
}

void build_order()
{
    customer_record our_customer;
    order our_order;
    list_elem first, second, third;

    memset(&our_order, 0, sizeof(customer_record));

    first.id     = 0;
    first.price  = 137;
    first.next   = &second;
    second.id    = 1;
    second.price = 42;
    /* BUG2: add */
    /* second.next  = &third; */
    third.id     = 2;
    third.price  = 61453;
    /* BUG3: change to NULL */
    third.next = &second;

    /* BUG1: add */
    /* our_order.customer = &our_customer; */

    our_order.item_head = &first;

    strcpy(our_customer.name, "Mustermann");
    strcpy(our_customer.address, "Unter den Linden 12a");

    init_large_struct(&our_order.something_large);

    print_order(&our_order);
}

int main(void)
{
    printf("Order management software v1.00\n");
    build_order();
    return 0;
}