麥當勞點餐系統

#include "pch.h"
#include <iostream>
using namespace std;

void main()
{
	int food, money, sum = 0;
	char again = 'y';


	while (again=='y'||again=='Y')
	{
		cout << "請問你要點甚麼餐?" << endl;
	    cout << "1號餐200塊，2號餐300塊，3號餐150塊，4號餐50塊" << endl;
		cin >> food;
		switch (food)
		{
			case 1 :
				cout << "200元" << endl;
				sum += 200;
				cout << "目前總共" << sum << "元" << endl;
				break;
			case 2 :
				cout << "300元" << endl;
				sum += 300;
				cout << "目前總共" << sum << "元" << endl;
				break;
			case 3:
				cout << "150元" << endl;
				sum += 150;
				cout << "目前總共" << sum << "元" << endl;
				break;
			case 4:
				cout << "50元" << endl;
				sum += 50;
				cout << "目前總共" << sum << "元" << endl;
				break;
			default :
				cout << "不好意思沒有這份餐" << endl;
		}
		cout << "請問要繼續點餐嗎?" << endl;
		cin >> again;

	}
	cout << "這位客人總共是" << sum << "元，請付錢" << endl;
	cin >> money;
	if (money > sum)
	{
		cout << "找您" << money - sum << "元" << endl;
	}
	else
		cout << "您的錢不夠，請稍後備好錢再點餐" << endl;
}