#include "stdafx.h"
#include <iostream>

using namespace std;

class vendingMachine
{
public:
	//attributes
	int numberofcansofcoke;
	int numberofcansofsprite;
	int numberofcansofdrpepper;
	int numberofcansofwater;
	float priceofcoke;
	float priceofsprite;
	float priceofdrpepper;
	float priceofwater;

	//constructor
	vendingMachine()
	{
		numberofcansofcoke = 10;
		numberofcansofsprite = 15;
		numberofcansofdrpepper = 10;
		numberofcansofwater = 20;
		priceofcoke = 1.25;
		priceofsprite = 1.25;
		priceofdrpepper = 1.50;
		priceofwater = 1.00;
	}

	//functions
	void dispensecoke()
	{
		float userGivenAmount;
		cout << "Price of Coke: " << priceofcoke << endl;
		cout << "Enter cash" << endl;
		cin >> userGivenAmount;

		if (userGivenAmount >= priceofcoke)
		{
			if (numberofcansofcoke > 0)
			{
				cout << " Grab your can. And oh, don't forget your change: " << userGivenAmount - priceofcoke << endl;
				numberofcansofcoke--;
			}
			else
			{
				cout << " Sorry, ran out of coke." << endl;
			}

		}
		else
		{
			cout << "Insufficient cash for coke." << endl;
		}
	}
	void dispensesprite()
	{
		float userGivenAmount;
		cout << "Enter cash" << endl;
		cin >> userGivenAmount;

		if (userGivenAmount >= priceofsprite)
		{
			if (numberofcansofsprite > 0)
			{
				cout << " Grab your can. And oh, don't forget your change: " << userGivenAmount - priceofsprite << endl;
				numberofcansofsprite--;
			}
			else
			{
				cout << " Sorry, ran out of sprite." << endl;
			}

		}
		else
		{
			cout << "Insufficient cash for sprite." << endl;
		}
	}
	void dispensedrpepper()
	{
		float userGivenAmount;
		cout << "Enter cash" << endl;
		cin >> userGivenAmount;

		if (userGivenAmount >= priceofdrpepper)
		{
			if (numberofcansofdrpepper > 0)
			{
				cout << " Grab your can. And oh, don't forget your change: " << userGivenAmount - priceofdrpepper << endl;
				numberofcansofdrpepper--;
			}
			else
			{
				cout << " Sorry, ran out of Dr. Pepper." << endl;
			}

		}
		else
		{
			cout << "Insufficient cash for Dr. Pepper." << endl;
		}
	}
	void dispensewater()
	{
		float userGivenAmount;
		cout << "Enter cash" << endl;
		cin >> userGivenAmount;

		if (userGivenAmount >= priceofwater)
		{
			if (numberofcansofwater > 0)
			{
				cout << " Grab your bottle. And oh, don't forget your change: " << userGivenAmount - priceofwater << endl;
				numberofcansofwater--;
			}
			else
			{
				cout << " Sorry, ran out of water." << endl;
			}

		}
		else
		{
			cout << "Insufficient cash for water." << endl;
		}
	}
	void addcan()
	{
		int canadded;
		int choice;

		cout << "Press 1 to add Coke" << endl;
		cout << "Press 2 to add Sprite" << endl;
		cout << "Press 3 to add Dr. Pepper" << endl;
		cout << "Press 4 to add Water" << endl;
		cout << "Press anything to return to main menu." << endl;
		cin >> choice;

		switch (choice)
		{
		case 1:
			cout << "There are currently " << numberofcansofcoke << " left." << endl;
			cout << "How many do you wish to add?" << endl;
			cin >> canadded;
			numberofcansofcoke = numberofcansofcoke + canadded;
			break;
		case 2:
			cout << "There are currently " << numberofcansofsprite << " left." << endl;
			cout << "How many do you wish to add?" << endl;
			cin >> canadded;
			numberofcansofsprite = numberofcansofsprite + canadded;
			break;
		case 3:
			cout << "There are currently " << numberofcansofdrpepper << " left." << endl;
			cout << "How many do you wish to add?" << endl;
			cin >> canadded;
			numberofcansofdrpepper = numberofcansofdrpepper + canadded;
			break;
		case 4:
			cout << "There are currently " << numberofcansofwater << " left." << endl;
			cout << "How many do you wish to add?" << endl;
			cin >> canadded;
			numberofcansofwater = numberofcansofwater + canadded;
			break;
		default:
			exit(1);
		}
	}
	void pricechange()
	{
		float newprice;
		int choice;

		cout << "Press 1 to change price of Coke" << endl;
		cout << "Press 2 to change price of Sprite" << endl;
		cout << "Press 3 to change price ofDr. Pepper" << endl;
		cout << "Press 4 to change price of Water" << endl;
		cout << "Press anything to return to main menu." << endl;
		cin >> choice;

		switch (choice)
		{
		case 1:
			cout << "Current price is: " << priceofcoke << endl;
			cout << "Enter new price for Coke." << endl;
			cin >> newprice;
			priceofcoke = newprice;
			break;
		case 2:
			cout << "Current price is: " << priceofsprite << endl;
			cout << "Enter new price for Sprite" << endl;
			cin >> newprice;
			priceofsprite = newprice;
			break;
		case 3:
			cout << "Current price is: " << priceofdrpepper << endl;
			cout << "Enter new price for Dr. Pepper." << endl;
			cin >> newprice;
			priceofdrpepper = newprice;
			break;
		case 4:
			cout << "Current price is: " << priceofwater << endl;
			cout << "Enter new price for Water." << endl;
			cin >> newprice;
			priceofwater = newprice;
			break;
		default:
			break;
		}
	}
};

int main()
{
	int choice;
	vendingMachine myMachine;

	while (1)
	{
		cout << "Press 1 for Coke." << endl;
		cout << "Press 2 for Sprite." << endl;
		cout << "Press 3 for Dr. Pepper." << endl;
		cout << "Press 4 for Water." << endl;
		cout << "Press 5 to add cans and bottles." << endl;
		cout << "Press 6 to change prices." << endl;
		cout << "Press anything else to leave the machine." << endl;
		cin >> choice;

		switch (choice)
		{
		case 1:
			myMachine.dispensecoke();
			break;
		case 2:
			myMachine.dispensesprite();
			break;
		case 3:
			myMachine.dispensedrpepper();
			break;
		case 4:
			myMachine.dispensewater();
			break;
		case 5:
			myMachine.addcan();
			break;
		case 6:
			myMachine.pricechange();
			break;
		default: cout << "Bye-Bye" << endl;
			exit(1);
		}
	}
	return 1;
}