customer_list.h

/*----------------------------------------------------------
 *                              HTBLA-Leonding, 2. JG
 * ---------------------------------------------------------
 * Defines an abstract data type for managing a list of customers.
 * ----------------------------------------------------------
 */
 
#ifndef ___CUSTOMER_LIST_H
#define ___CUSTOMER_LIST_H
 
#include <stdbool.h>
// TODO: Define a symbolic constant named 'MAX_LIST_ENTRIES' for 13 customers
#define MAX_LIST_ENTRIES 13
 
// TODO Declare the 'public' data type of the list entry
 
typedef struct CustomerListEntryData* CustomerListEntry;
 
// TODO Declare the 'public' data type of the list entry
typedef struct CustomerListData* CustomerList;
// Note a really const customer list:
// typedef struct CustomerListData const* ConstCustomerList;
 
CustomerList init_customer_list();
 
int get_length(const CustomerList cl);
 
CustomerListEntry create_customer(int id, const char* customer_name, int revenue);
 
bool add_customer(CustomerList cl, int id, const char* customer_name, int revenue);
 
bool add_customers(CustomerList cl, CustomerListEntry customers[], int n);
 
CustomerListEntry get_customer_with_index(const CustomerList cl, unsigned int index);
 
CustomerListEntry get_customer_with_id(const CustomerList cl, int id);
 
int get_customers_with_revenue(const CustomerList cl, int lower_bound, int upper_bound, CustomerListEntry result_list[], unsigned int result_len);
 
CustomerListEntry get_customer_with_highest_revenue(const CustomerList cl);
 
CustomerListEntry get_customer_with_lowest_revenue(const CustomerList cl);
 
int get_top_n_customers_revenue(const CustomerList cl, int n, CustomerListEntry result_list[]);
 
int get_bottom_n_customers_revenue(const CustomerList cl, int n, CustomerListEntry result_list[]);
 
int get_customer_id(CustomerListEntry customer);
 
#endif