//Write a program that simulates a healthy drink machine. The program should
//use functions to service arrays that store the following data.

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

void buyDrink(int); //Max 5 per selection

int main()
{

const int choices = 3; //Number of drink types
string drinks[choices] = {"Green Tea - ",  "\nKale Juice - ", "\nVery Berry Shake - "}; //Drink choices
double drinkPrice[choices] = {1.25, 1.50 , 1.75}; //Drink prices
int drinkAmount[choices] = {5,5,5}; //Amount of each in the machine
int drinkType = 0;
int drinksinMachine = 15;
double change = 0;
double moneyInserted = 0; //Money user enters
double machineMade = 0; //Total machine made, initialized at 0 to accumulate.

cout << "The drinks you may purchase are: \n\n";
for(int count=0; count<choices; count++) //Drink display
{
	cout << drinks[count];
	cout << drinkPrice[count];
}

//User decides whether to proceed with the program or to terminate it.

toupper; //Changes lowercase to uppercase
char response ='y';
cout << " \n\nWould you like to purchase a drink from this machine? \n";
cout << "If yes type 'Y', if not type 'N' and the program will exit. \n";
cin >> response;

	while(toupper(response)!= 'N' && toupper(response)!= 'Y')
        {
                cout << "Please input 'N' or 'Y' "<< endl;
                cin >> response;
        }
        if(toupper(response) == 'N')
                return 0;
		else if (toupper(response) == 'Y')
        {
                int drinkKind;
                cout << "Enter 0 for Green Tea, 1 for Kale Juice, or 2 for Very Berry Shake. \n";
                cin >> drinkKind;

				while(drinkKind != 0 && drinkKind != 1 && drinkKind != 2)
                {
                        cout << "Please choose only one drink. \n";
                        cin >> drinkKind;
                }

				if(drinkKind == 0)
					cout << "You have chosen Green Tea. \n";

				if(drinkKind == 1)
					cout << "You have chosen Kale Juice. \n";

				if(drinkKind == 2)
					cout << "You have chosen Very Berry Shake. \n";



				cout << "Enter the amount of money to two decimal places that you will be inserting: \n";
                cin >> moneyInserted;



				if(moneyInserted>1.25 && moneyInserted <= 2.00)
				{
					cout << "You have inserted: $" << moneyInserted << endl;
				}

				else if(moneyInserted<1.25 || moneyInserted >2.00)
				{
						cout << "This machine will not accept anything less than $1.25 or greater \nthan $2.00. Try again:  \n";
						cin >> moneyInserted;
				}

				change = moneyInserted - drinkPrice[drinkKind];
				if(change>0)
				{
					cout << "Your change is: $" << change << endl;

					machineMade+= moneyInserted-change;
                        drinksinMachine--;

                        cout << "This machine has accumulated: " << machineMade << endl;
				}
				else if(change<0)
				{
					cout << "You do not have enough money." << endl;
					cout << "Enter new amount." << endl;
					cin >> moneyInserted;
				}
				else
				{
					cout << "You have no change. Enjoy your drink! \n";
				}
		}
		return 0;

}