Так что по большей части я понимаю, что я сделал неправильно, проблема в том, что я не знаю, как это исправить.
Цель: это система управления магазином, которая должна включать меню и функции управления запасами, которыми можно манипулировать. Для этого я использовал массивы для добавления товаров магазина, их описания и количества. Все массивы частично заполнены третьим элементом и имеют максимальное значение из десяти элементов.
Проблема: Когда программа запускается в первый раз, она работает, и пользователь может видеть их инвентарь, описание и количество. Однако, когда они выходят в меню и возвращаются в инвентарь, все, что находится за третьим элементом, очищается. Это происходит из-за объявлений, инициализирующих массивы после третьего элемента равными 0. Как это исправить, чтобы гарантировать, что пользователь сохранит свой инвентарь и сможет просмотреть его по возвращении?
#include <iostream>
#include <vector>
#include <fstream>
#include <string>
#include <cmath>
#include <cstdlib>
using namespace std;
//declarations
int mainMenu(); //done
void inventoryMgmt();
void addInv(); //working on
void invView(string x[], int sizeofArray, string y[], int secondArray, int z[], int thirdArray);
void editor(string x[], int sizeofArray, string y[], int secondArray, int z[], int thirdArray);
void customerReciept(); //done
void calculatePrice(); //done
void exit(); //done
const double massTax = 0.0625;
//main
int main() {
int choice;
bool repeat = true;
while (repeat = true) {
choice = mainMenu();
switch (choice) {
case 1:
customerReciept();
break;
case 2:
inventoryMgmt();
break;
//case 3:
//itemSearcher();
//break;
case 4:
exit();
repeat = false;
break;
}
}
return 0;
}
//main menu function ***done
int mainMenu() {
cout << "\n\n\t\t\t\t Welcome to the Massasoit Store Management System " << endl;
cout << "\t\t\t\t ________________________________________________ \n\n";
cout << "\t\t\t\t\t Main Menu: " << endl;
cout << "\t\t\t\t\t\t 1. Customer Reciept" << endl;
cout << "\t\t\t\t\t\t 2. Inventory Management" << endl;
cout << "\t\t\t\t\t\t 3. Item Search" << endl;
cout << "\t\t\t\t\t\t 4. Exit" << endl << endl;
int choice;
cout << "\t\t\t\t\t\t Where do you need to go?: ";
cin >> choice;
while (choice < 1 || choice > 4) {
cout << "\t\t\t\t\t Incorrect Selection Please Select Again: ";
cin >> choice;
}
return choice;
}
//customer reciept function **done
void customerReciept() {
cout << "\n\n\t\t\t\t Welcome to the Massasoit Store: Customer Reciept " << endl;
cout << "\t\t\t\t ________________________________________________ \n\n";
cout << "\t\t\t\t\t Receipt Menu: " << endl;
cout << "\t\t\t\t\t\t 1. Calculate Receipt" << endl;
cout << "\t\t\t\t\t\t 2. Return to Main" << endl;
int recieptChoice;
cout << "\t\t\t\t\t\t Where do you need to go?: ";
cin >> recieptChoice;
while (recieptChoice < 1 || recieptChoice > 2) {
cout << "Invalid Selection Please Choose Again: ";
cin >> recieptChoice;
}
if (recieptChoice == 1) {
calculatePrice();
}
}
void calculatePrice() {
double cost;
double taxAmount;
int numOfItems;
double finalCost = 0;
char tax;
int i;
cout << "\n\n\t\t\t\t Welcome to the Massasoit Store: Customer Reciept " << endl;
cout << "\t\t\t\t ________________________________________________ \n\n";
cout << "How many items were purchased?: ";
cin >> numOfItems;
for (i = 0; i < numOfItems; i++) {
cout << "What did item " << i + 1 << " cost? $";
cin >> cost;
cout << "Is this item taxable? (y/n):";
cin >> tax;
if (tax == 'y' || tax == 'Y') {
taxAmount = (cost * massTax);
cost = taxAmount + cost;
finalCost = cost + finalCost;
}
else {
finalCost = cost + finalCost;
}
}
cout.setf(ios::fixed);
cout.setf(ios::showpoint);
cout.precision(2);
cout << "This customer's total is $" << finalCost << endl;
}
void inventoryMgmt() {
int invChoice;
cout << "\n\n\t\t\t\t\t Welcome to Inventory Management " << endl;
cout << "\t\t\t\t ______________________________________________ \n\n";
cout << "\t\t\t\t\t Inventory Settings: " << endl;
cout << "\t\t\t\t\t\t 1. Add/View & Edit/Delete Inventory" << endl;
cout << "\t\t\t\t\t\t 2. Return to Main" << endl;
cout << "\t\t\t\t\t\t Where do you need to go?: ";
cin >> invChoice;
cout << endl << endl;
while (invChoice < 1 || invChoice > 2) {
cout << "Invalid Selection Please Choose Again: ";
cin >> invChoice;
}
if (invChoice == 1) {
addInv();
}
if (invChoice == 2) {
//edit/delete();
}
}
void addInv() {
//so when this is called, everything is initialized to 0 which makes it wipe the memory
//when the user comes back to it from the menu.
const int description = 20; //this allows a short description for each item
const int counter = 10; //slots of inventory allowed
int quantity[10] = {10, 15, 45};
string itemArray[counter] = { "Hot Drinks", "Cold Drinks", "Books"};
string descriptionArray[description] = { "Coffee, Tea etc", "Water, juice, etc", "Texts, notebook, etc"};
char addChoice;
int destination;
cout << "\t\t\t\t\t\t 1. Add/View" << endl;
cout << "\t\t\t\t\t\t 2. Edit/Delete" << endl;
cout << "\t\t\t\t\t\t 3. Exit to Main" << endl;
cout << "\t\t\t\t\t\t Where would you like to go?: " << endl;
cin >> destination;
while (destination < 1 || destination > 3) {
cout << "Invalid Selection, Please Select Again: ";
cin >> destination;
}
if (destination == 1) {
cout << "Would you like to add an item? (y/n): ";
cin >> addChoice;
int i = 3; //these two are initialized to three to ensure that the store
int ii = 3; //will always have hot drinks, cold drinks and books as options
while (addChoice == 'y' && i < counter) {
cout << "What would you like to add?: ";
cin >> itemArray[i];
cout << "You have added \"" << itemArray[i] << "\" to the inventory\n";
cout << "Please Provide a Brief Description: ";
cin.ignore();
getline(cin, descriptionArray[ii]);
cout << "You've described \"" << itemArray[i] << "\" as \"" << descriptionArray[i] << "\"" << endl;
cout << "What is the quantity of " << itemArray[i] << " in stock?";
cin >> quantity[i];
cout << "Would you like to add another item?";
cin >> addChoice;
i++;
ii++;
if (i > counter) {
cout << "**INVENTORY LIMIT REACHED*** ";
}
}
invView(itemArray, 10, descriptionArray, 10, quantity, 10); //working on this. //so use this for view, edit, and delete.
}
}
void invView(string x[], int sizeofArray, string y[], int secondArray, int z[], int thirdArray) { //add quantity
int i = 0;
int ii = 0;
int iii = 0;
cout << "Your inventory consists of: ";
while (i < sizeofArray && x[i] != "" && ii < secondArray && y[i] != "" && iii < thirdArray) {
cout << x[i] << " - " << y[i] << " | Quantity: " << z[i] << endl;
i++;
ii++;
}
}
void editor(string x[], int sizeofArray, string y[], int secondArray, int z[], int thirdArray) {
cout << "Which item would you like to edit?";
}
void exit() {
cout << "\n\n\t\t\t\t Welcome to the Massasoit Store Management System " << endl;
cout << "\t\t\t\t ________________________________________________ \n\n";
cout << "\t\t\t\t Thank you for using the Massasoit Store Management System" << endl;
exit(1);
}
Я включил весь код на случай, если он понадобится. Проблемы сосредоточены вокруг функций inventoryMgmt () и addInv ().
Заранее благодарю за любую помощь!