#include <iostream>

#define SUGGAR 0.2
#define MILK 0.1
#define COFFEE 1.2
#define TEA 1.0

using namespace std;

class automat {
	private:
		float money;
		float price;
		float epsilon;
		bool milk;
		bool sugar;
	
	public:
		automat();
		void add_money(float);
		float get_money();
		bool get_coffee();
		bool get_tea();
		void add_sugar();
		void add_milk();
		void print_menue();
		bool is_milk();
		bool is_sugar();
};

automat::automat() {
	money = 0;
	price = 0;
	epsilon = 0.01;
	sugar = false;
	milk = false;
}

bool automat::is_milk() {
	return milk;
}

bool automat::is_sugar() {
	return sugar;
}
	
	
void automat::add_money(float adding) {
	money += adding;
	cout << "Es ist nun " << money << " Euro verfuegbar" << endl;
}

float automat::get_money() {
	return money;
}

void automat::add_sugar() {
	if(!sugar) {
		sugar = true;
	}
}

void automat::add_milk() {
	if(!milk) {
		milk = true;
	}
}

void automat::print_menue() {
	cout << "  Kaffeautomat " << endl;
	cout << "  ------------ " << endl;
	cout << "  K  - Kaffee" << endl;
	cout << "  T  - Tee" << endl;
	cout << "  M  - Zusatz : Milch ";
	if(is_milk()) {
		cout << "(X)" << endl;
	} else {
		cout << " - kostet " << MILK << " Euro "<< endl;
	}
	cout << "  Z  - Zusatz : Zucker ";
	if(is_sugar()) {
		cout << "(X)" << endl;
	} else {
		cout << " - kostet " << SUGGAR << " Euro" << endl;
	}
	cout << "  C  - Abbrechen \n" << endl;
	cout << "  Aktuelles Guthaben: " << get_money() << " Euro" << endl;
}

bool automat::get_coffee() {
	if (is_milk()) {
		price += MILK;
	}
	if (is_sugar()) {
		price += SUGGAR;
	}
	price += COFFEE;
	if ((money - price) > epsilon) {
		cout << "Kaffe bitte entnehmen" << endl;
		money -= price;
		cout << "Sie bekommen noch " << get_money() << " Euro zurueck" << endl;
		return false;
	} else {
		cout << "BEEP. Sie verfuegen "<< money << endl;
		price = 0;
		return true;
	}
	return true;
}

bool automat::get_tea() {
	if (is_milk()) {
		price += MILK;
	}
	if (is_sugar()) {
		price += SUGGAR;
	}
	price += TEA;
	if ((money - price) > epsilon) {
		cout << "Kaffe bitte entnehmen" << endl;
		money -= price;
		cout << "Sie bekommen noch " << get_money() << " Euro zurueck" << endl;
		return false;
	} else {
		cout << "BEEP. Sie verfuegen "<< money << endl;
		price = 0;
		return true;
	}
	return true;
}

int main() {
	char s[255];
	bool flag = true;
	automat kaffeautomat;
	do {
		kaffeautomat.print_menue();
		cin >> s;
		switch(s[0]) {
			case 'K':	// Kaffee
				flag = kaffeautomat.get_coffee();
				break;
			case 'T':	// Tee
				flag = kaffeautomat.get_tea();
				break;
			case 'M': 	// Milch
				kaffeautomat.add_milk();
				break;
			case 'Z':	// Zucker
				kaffeautomat.add_sugar();
				break;
			case 'C':	// Cancel
				flag = false;
				cout << "Ring Ring " << kaffeautomat.get_money() << " Euro zurueck! " << endl;

				break;
			default:
				// okay, nicht sauber....falls doch ein Buchstabe gedrueckt....
				kaffeautomat.add_money(atof(s));
		}
	} while(flag);
	return(0);
}