void processPurchase() {
String customer_name;
String object;
int quantity;
int customer_present = 0;
readString(&customer_name);
readString(&object);
readNum(&quantity);
for (int k = 0; k < num_customers; k += 1) { //check every existing customer
if (StringIsEqualTo(&(customers[k].name), &customer_name)) {
customer_present = 1;
processCustomerRequest(&customer_name, &object, quantity, k);
}
}
//non existing customers here
if (!customer_present && num_customers < MAX_CUSTOMERS) {
if(!processCustomerRequest(&customer_name, &object, quantity, num_customers) && quantity > 0){
//enough inventory to purchase, add customer to database
customers[num_customers].name = StringDup(&customer_name);
num_customers += 1;
}
}
//destroy strings used for error messages
StringDestroy(&customer_name);
StringDestroy(&object);
}
int processCustomerRequest(String* name, String* object, int quantity, int num) {
String Bottles = StringCreate("Bottles");
String Diapers = StringCreate("Diapers");
String Rattles = StringCreate("Rattles");
int error = 0;
if (StringIsEqualTo(object, &Bottles)) {
if (quantity <= store_inv.bottles) {
store_inv.bottles -= quantity;
customers[num].bottles += quantity;
error = 0;
}
else {
//error message
printf("Sorry ");
StringPrint(name);
printf(", we only have %d Bottles\n", store_inv.bottles);
error = 1;
}
}
else if (StringIsEqualTo(object, &Diapers)) {
if (quantity <= store_inv.diapers) {
store_inv.diapers -= quantity;
customers[num].diapers += quantity;
error = 0;
}
else {
//error message
printf("Sorry ");
StringPrint(name);
printf(", we only have %d Diapers\n", store_inv.diapers);
error = 1;
}
}
else if (StringIsEqualTo(object, &Rattles)) {
if (quantity <= store_inv.rattles) {
store_inv.rattles -= quantity;
customers[num].rattles += quantity;
error = 0;
}
else {
//error message
printf("Sorry ");
StringPrint(name);
printf(", we only have %d Rattles\n", store_inv.rattles);
error = 1;
}
}
StringDestroy(&Bottles);
StringDestroy(&Diapers);
StringDestroy(&Rattles);
if (error == 0) { return 0; }
else { return 1; }
}
int main(void) {
String s = StringCreate("Craig");
String t = StringDup(s);
t = s;
printf("Hello ");
StringPrint(s);
printf(" I see you're %d characters long\n",
StringSize(s));
StringDestroy(s);
StringDestroy(t);
}
int main(void) {
String s = StringCreate("Craig");
String t = s; // YOU STILL ONLY HAVE ONE STRING. Remember that t is a shallow reference, only a pointer to the same string.
// printf() won't work since our string doesn't have a null terminator
printf("Hello ");
StringPrint(s);
printf(" I see you're %d characters long\n", s.length); // using s.ptr and s.length is BAD, don't do this for the project!
StringDestroy(s);
}
/* clear the inventory and reset the customer database to empty */
void reset(void) {
/* your code here */
for (int k = 0; k < num_customers; k += 1) {
StringDestroy(&(customers[k].name));
customers[k].bottles = 0;
customers[k].diapers = 0;
customers[k].rattles = 0;
}
store_inv.bottles = 0;
store_inv.diapers = 0;
store_inv.rattles = 0;
num_customers = 0;
}
void processInventory() {
String object;
int quantity;
String Bottles = StringCreate("Bottles");
String Diapers = StringCreate("Diapers");
String Rattles = StringCreate("Rattles");
readString(&object);
readNum(&quantity);
if (StringIsEqualTo(&object, &Bottles)) {
store_inv.bottles += quantity;
}
else if (StringIsEqualTo(&object, &Diapers)) {
store_inv.diapers += quantity;
}
else if (StringIsEqualTo(&object, &Rattles)) {
store_inv.rattles += quantity;
}
StringDestroy(&object);
StringDestroy(&Bottles);
StringDestroy(&Diapers);
StringDestroy(&Rattles);
}
