Garmaine Staff asked 2 years ago
I have created a menu system for a restaurant. Using arrays, I have created a system for adding new items to the menu and having them printed in a text file. This all works fine.
The issue arises when I need to edit an item, for example, if I have added 3 dishes and use the edit option, only the first line of the text file is edited and the item number returns to 0 when the minimum should always be 1.
How can I make this work so if I edit item 3, the edit will be displayed in the text file on line 3 instead of overwriting line 1?
I am not sure where the issue lies so I am attaching all the project files as it is not too long.
Thank you in advance
The .h file:
#ifndef RESTAURANTMENU_ITEMS_H
#define RESTAURANTMENU_ITEMS_H
#define MAX_ITEMS 20
#include <iostream>
#include <string>
#include <limits>
#include <fstream>
class Item{
private:
int itemNumber;
std::string itemCategory;
std::string itemDescription;
double itemPrice;
public:
Item();
//setter function
void setItemDetails();
void editItemDetails();
//getter function
void printItemDetails();
//save to file
void save(std::ofstream &outfile);
};
#endif //RESTAURANTMENU_ITEMS_H
The implementation file:
#include "item.h"
//constructor
Item::Item(){
itemNumber = 0;
itemCategory = "Item not categorised.";
itemDescription = "No description written.";
itemPrice = 0.0;
}
//setter functions
void Item::setItemDetails() {
int choice;
static int counter = 1;
itemNumber = counter++;
std::string copyCategory;
std::cout << "What category is this item?" << std::endl;
std::cout << "1. Meat Dish\n2. Fish Dish\n"
"3. Vegetarian Dish\n4. Drink\n";
std::cin >> choice;
switch (choice) {
case 1:
itemCategory = "Meat";
break;
case 2:
itemCategory = "Fish";
break;
case 3:
itemCategory = "Vegetarian";
break;
case 4:
itemCategory = "Drink";
break;
default:
std::cout << "Error. Please enter a number between 1-4: " << std::endl;
std::cin >> choice;
}
std::cout << "Please enter a short description: " << std::endl;
std::cin.ignore(100, '\n');
std::getline(std::cin, itemDescription);
std::cout << "Please set the price: " << std::endl;
std::cout << "£";
if (!(std::cin >> itemPrice)) {
std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
std::cout << "Error. Please enter a number: ";
}
}
void Item::editItemDetails() {
int choice;
std::string copyCategory;
std::cout << "What category is this item?" << std::endl;
std::cout << "1. Meat Dish\n2. Fish Dish\n"
"3. Vegetarian Dish\n4. Drink\n";
std::cin >> choice;
switch (choice) {
case 1:
itemCategory = "Meat";
break;
case 2:
itemCategory = "Fish";
break;
case 3:
itemCategory = "Vegetarian";
break;
case 4:
itemCategory = "Drink";
break;
default:
std::cout << "Error. Please enter a number between 1-4: " << std::endl;
std::cin >> choice;
}
std::cout << "Please enter a short description: " << std::endl;
std::cin >> itemDescription;
//std::cin.ignore(100, '\n');
//std::getline(std::cin, itemDescription);
std::cout << "Please set the price: " << std::endl;
std::cout << "£";
//if (!(std::cin >> itemPrice)) {
//std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
//std::cout << "Error. Please enter a number: ";
std::cin >> itemPrice;
//}
}
//getter functions
void Item::printItemDetails(){
std::cout << "\nItem Number: " << itemNumber << "| Category: "
<< itemCategory << "| Description: " << itemDescription << "| Price: £" << itemPrice;
}
//save to file
void Item::save(std::ofstream &outfile) {
outfile << "\nItem Number: " << itemNumber << "| Category: "
<< itemCategory << "| Description: " << itemDescription << "| Price: £" << itemPrice;
}
main.cpp
#include <iostream>
#include "item.h"
int main() {
Item newDish[MAX_ITEMS];
bool exit = false;
int choice;
int count = 0;
std::ofstream saveFile;
saveFile.open("menu.txt", std::ios::in | std::ios::out);
while (!exit) {
std::cout << "Menu Creation Terminal\n\n" << std::endl;
std::cout << "\tWelcome to Wrapid™ Restaurants\n\n\t\tMenu Creation Terminal\n\n" << std::endl;
std::cout << "1. Add a new dish\n2. Edit Current Menu\n3. Quit\n" << std::endl;
std::cout << "Please select an option: ";
std::cin >> choice;
switch (choice) {
case 1: {
int option = true;
int i;
//create items
std::cout << "Item Creation Menu";
for (i = 0; i < MAX_ITEMS; i++) {
count += 1;
std::cout << "\n\nItem number: " << i+1 << "\n\n";
newDish[i].setItemDetails();
newDish[i].save(saveFile);
std::cout << "Would you like to add another item?" << std::endl;
std::cout << "1. Yes\n2. No" << std::endl;
std::cin >> option;
if (option == 2) {
break;
}
std::cout << "You have added the following items: " << std::endl;
newDish[i].printItemDetails();
}
}
break;
case 2: {
int editOpt;
int i;
//edit items
std::cout << "Edit Current Menu\n\n" << std::endl;
for (i = 0; i < count; i++) {
newDish[i].printItemDetails();
}
std::cout << "\n\nPlease enter the item number of the item you would like to edit: " << std::endl;
std::cin >> editOpt;
while(editOpt > 20) { std::cout << "Error. Limited to 20 items.\n"
"Please try again: "; std::cin >> editOpt; }
i = editOpt-1;
newDish[i].editItemDetails();
newDish[i].save(saveFile);
}
break;
case 3: {
std::cout << "Thanks for using this terminal. Have a nice day." << std::endl;
exit = true;
}
break;
default: {
std::cout << "Error. Invalid selection. Please select a valid option: " << std::endl;
std::cin >> choice;
}
}
}
saveFile.close();
return 0;
}