// [Q3 - 10pts] Implement the insert function. The function should check
// if existing order has been made (using the order id). If an order
// exist, update the record. Otherwise, insert a new order into the queue
// – follow FIFO.
int insert_order(struct Order* item) {
/* -- START CODING HERE -- */
struct Order *ptr = Queue;
int indicator = update_order(item);
if (indicator == -1) {
if (!ptr) {
item->next = NULL;
Queue = item;
return 0;
}
else {
while (ptr->next != NULL) {
ptr = ptr->next;
}
item->next = NULL;
ptr->next = item;
}
}
/* -- END CODING HERE -- */
return 0;
}
bool __connman_connection_update_gateway(void)
{
struct gateway_data *default_gateway;
bool updated = false;
GHashTableIter iter;
gpointer value, key;
if (!gateway_hash)
return updated;
update_order();
default_gateway = find_default_gateway();
__connman_service_update_ordering();
DBG("default %p", default_gateway);
/*
* There can be multiple active gateways so we need to
* check them all.
*/
g_hash_table_iter_init(&iter, gateway_hash);
while (g_hash_table_iter_next(&iter, &key, &value)) {
struct gateway_data *active_gateway = value;
if (active_gateway == default_gateway)
continue;
if (active_gateway->ipv4_gateway &&
active_gateway->ipv4_gateway->active) {
unset_default_gateway(active_gateway,
CONNMAN_IPCONFIG_TYPE_IPV4);
updated = true;
}
if (active_gateway->ipv6_gateway &&
active_gateway->ipv6_gateway->active) {
unset_default_gateway(active_gateway,
CONNMAN_IPCONFIG_TYPE_IPV6);
updated = true;
}
}
if (updated && default_gateway) {
if (default_gateway->ipv4_gateway)
set_default_gateway(default_gateway,
CONNMAN_IPCONFIG_TYPE_IPV4);
if (default_gateway->ipv6_gateway)
set_default_gateway(default_gateway,
CONNMAN_IPCONFIG_TYPE_IPV6);
}
return updated;
}
// [Q2 - 5pts] Write code to capture customerNo, cost, name, address, and item
// into the new created struct Order pointed by ptr. Assume name, address, and item
// cannot accept any spaces or return characters.
int insert_update_order_helper(char c) {
struct Order *ptr = (struct Order *)malloc(sizeof(struct Order));
/* -- START CODING HERE -- */
printf("What is the order id? ");
scanf("%d", &ptr->orderid);
printf("What is your customer id? ");
scanf("%d", &ptr->customerNo);
printf("What is your name? ");
scanf("%s", ptr->name);
printf("What is your address? (No spaces) ");
scanf("%s", ptr->address);
printf("What is the item? ");
scanf("%s", ptr->item);
printf("What is the cost? ");
scanf("%f", &ptr->cost);
ptr->next = NULL;
/* -- END CODING HERE -- */
if (c == 'i') {
return insert_order(ptr);
}
else {
int value = update_order(ptr);
if (value == -1) { printf("No Record Found."); }
return update_order(ptr);
}
}
void grobner::update_order(equation_set & s, bool processed) {
ptr_buffer<equation> to_remove;
equation_set::iterator it = s.begin();
equation_set::iterator end = s.end();
for (;it != end; ++it) {
equation * eq = *it;
if (update_order(eq)) {
if (processed) {
to_remove.push_back(eq);
m_to_process.insert(eq);
}
}
}
ptr_buffer<equation>::iterator it2 = to_remove.begin();
ptr_buffer<equation>::iterator end2 = to_remove.end();
for (; it2 != end2; ++it2)
s.erase(*it2);
}
void grobner::update_order() {
update_order(m_to_process, false);
update_order(m_processed, true);
}
