[c++] 맥도날드 햄부기 주문 프로그램

중간에 문제가 있어서 수정해야 함... 수정되면 표시하겠음

 

전체 시스템과 메뉴를 위해 class를 두 개 사용했다. 점차 클래스와 객체의 개념에 익숙해지고 있는 것 같다... 하지만 아직도 명확히 설명해보라면 모호한 감이 있는 것 같음. 

#include <iostream>
#include <string>
#include <vector>
#include <iomanip>
using namespace std;

class MenuItem {
public:
	string name;
	int price;
	int num;

	MenuItem(string n, int p, int num) : name(n), price(p), num(num) {}
};

class Mcdonald {
private:
	string userid;
	int password, balance, total;
	vector<MenuItem> menu = {
		{"Hamburger", 1000, 0},
		{"Cheeseburger", 1500, 0},
		{"BigMac", 3000, 0},
		{"Double Quarter Cheese", 5000, 0},
		{"Fries", 1500, 0},
		{"Chicken McNuggets", 2000, 0},
		{"Quarter Pounder Cheese", 4000, 0},
		{"Coke", 1500, 0}
	};
	vector<MenuItem> usermenu{};

public: 
	Mcdonald(string id = "", int bal = 0, int pass = 0, int t = 0) {
		userid = id;
		balance = bal;
		password = pass;
		total = t;
	}
		
	void SignUp() {
		cout << "Input your ID(0-to main menu): ";
		cin >> userid;
		cout << "Input your password: ";
		cin >> password;
		cout << "Input your Initial Money: ";
		cin >> balance;
		cout << "Welcome, " << userid << endl;
	}

	bool IdCheck() {
		string inputid;
		int inputpass(0);

		cout << "Input your ID(0-to main menu): ";
		cin >> inputid;
		cout << "Input your password: ";
		cin >> inputpass;

		if (inputpass == password && (userid.compare(inputid) == 0)) {
			return true;
		}
		else return false;
	}

	void ShowMenu() {
		cout << "-------McDonalds Menu-------" << endl;
		for (int i = 0; i < menu.size(); ++i) {
			cout << setw(2) << right << i + 1 << ". ";             
			cout << setw(25) << left << menu[i].name;              
			cout << right << "-" << menu[i].price << endl;        
		}
	}

	void Order() {	//동일한 메뉴 N개 주문시 개별적으로 집계됨
		int getmenu(0), menunum(0);
		if (IdCheck() == true) {
			while (true) {
				cout << "Select menu number(0-to main menu): ";
				cin >> getmenu;
				if (getmenu == 0) break;
				else if (getmenu < 1 || getmenu > menu.size()) {
					cout << "Invalid menu number" << endl;
					continue;
				}

				cout << "How many " << menu[getmenu - 1].name << " do you want: ";
				cin >> menunum;

				for (int i = 0; i < menunum; ++i) {
					usermenu.push_back(MenuItem(
						menu[getmenu - 1].name,
						menu[getmenu - 1].price,
						menunum   
					));
				}
				total += menunum * menu[getmenu - 1].price;
			}
			if (balance - total < 0) { 
				cout << "Error" << endl;
				usermenu.clear();
				return;
			}
			else { balance -= total;
			OrderCondition();
			}
		}
		else cout << "Wrong User Information";
	}

	void OrderCondition() {	//메뉴 구매 안했을 시 잔액 출력이 안됨
			if(usermenu.size() >= 1) {
				for (int i = 0; i < usermenu.size(); ++i) {
					cout << i + 1 << ". " << usermenu[i].name << ": " << usermenu[i].num << endl;
				}
			cout << "your total purchase amount is " << total << endl;
			cout << "The balance is " << balance << "\nThanks" << endl;
		}
	}

	void Refund() {	//구매하지 않은 메뉴 선택시 오류 발생
		int i(0), refund(0);
		if (IdCheck() == true) {
			OrderCondition();

			while (true) {
				cout << "Choose number(0- to main menu): ";
				cin >> i;
				if (i == 0) break;
				
				refund = (usermenu[i - 1].price) * (usermenu[i - 1].num);
				total -= refund;
				balance += refund;

				cout << "Succesfully refunded" << endl;
				cout << "your total purchase amount is " << total << endl;
				cout << "The balance is " << balance << endl;
			}
		}
	}
};
int main() {
	cout << "Mcdonalds Delivery System" << endl;
	int num(0);
	Mcdonald user("name", 0, 0);

	while (1) {
		cout << "1. Sign up\n2. Show Menu\n3. Order\n4. Order condition\n5. Refund\n0.Exit\nSelect ->" << endl;
		cin >> num;

		if (num == 1) user.SignUp();
		else if (num == 2) user.ShowMenu();
		else if (num == 3) user.Order();
		else if (num == 4) {
			if (user.IdCheck() == true) user.OrderCondition();
			else continue;
		}
		else if (num == 5) user.Refund();
		else if (num == 0) break;
		else cout << "Wrong number" << endl;
	}
	return 0;
}