function.cpp
#include<iostream>
#include<string>
#include "Header.h"

void Automate::plusSumMoney()
{
	cout << "You gave: " << money << " $";
	cout << "Please, give plus " << differntly << "$ for good sales!";
	double h;
	cin >> h;
	this->money += h;
}
void Automate::Display::Menuchoice()
{
	cout << "1.Korona...............5(dollars)" << endl;
	cout << "2.Milka..............12.5(dollars)" << endl;
	cout << "3.Snikers.............4.5(dollars)" << endl;
	cout << "4.Nuts................3.8(dollars)" << endl << endl;
	cout << "Please, make your choice..." << endl << endl;
}

void Automate::Display::setMassege(string massege)
{
	this->massege = massege;
}

string Automate::Display::printMassege()
{
	return  this->massege;
}
int Automate::getChoise()
{
	return this->choise;
}
double Automate::getMoney()
{
	return this->money;
}
Automate::Automate()
{
	this->money = 0;
	this->numbersweets = 20;
	this->choise = 0;
	this->differntly = 0;
}
Automate::~Automate()
{
	cout << "keep kalm!";
}
void Automate::MenuforYou()
{
	display.Menuchoice();
}
void Automate::printMassege()
{
	display.printMassege();
}
void Automate::getMoneyFromuser(User & user)
{
	cout << "Пожалуйста внесите кюпюры номиналом 1  2  5  10 или 20 доларов" << endl;
	cout << "Для завершения введите 0" << endl;

	this->setMoney(user.giveMoney());
}

void Automate::getChoiseFromUser(User & user)
{
	cout << "Введите номер товара: "<<endl;
	choise = user.doChoise();
}

void Automate::giveSweets(Sweets & sweets, Automate & automate)
{
	cout << sweets.obgortka(automate);
}

bool Automate::checkMoneyPrize()
{
	switch (this->choise)
	{
	case (1):
	{
		if (money < 5) { plusSumMoney(); }

		else if (money >= 5) { cout << "Оплата прошла успешно!"<<endl; }
		this->differntly = money - 5;
		return true;
		break;
	}
	case (2):
	{
		if (money < 12.5) { plusSumMoney(); }

		else if (money >= 12.5) { cout << "Оплата прошла успешно!"<<endl; }
		this->differntly = money - 12.5;
		return 1;
		break;
	}
	case (3):
	{
		if (money < 4.5) { plusSumMoney(); }

		else if (money >= 4.5) { cout << "Оплата прошла успешно!"<<endl; }
		this->differntly = money - 4.5;
		return 1;
		break;
	}
	case (4):
	{
		if (money < 3.8) plusSumMoney();

		else if (money >= 3.8)  cout << "Оплата прошла успешно!"<<endl;
		this->differntly = money - 3.8;
		return 1;
		break;
	}
	default: cout << "Система сломана беги!"; break;
	}
}
void Automate::plusSweets()
{
	if (this->numbersweets <= 3) this->numbersweets += 25;
}
void Automate::setMoney(double money)
{
	this->money = money;
}
double Automate::getDifferently()
{
	return this->differntly;
}
Sweets::Sweets()
{
	this->name = "Chocolate";
	this->price = 20;
}
Sweets::~Sweets()
{
	cout << "I am working";
}
void Sweets::setName(string name)
{
	this->name = name;
}
string Sweets::getname()
{
	return  this->name;
}
void Sweets::setPrice(double price)
{
	this->price = price;
}
double Sweets::getPrice()
{
	return price;
}
string Sweets::obgortka(Automate & automate)
{
	if ((automate.getChoise() == 1) && (automate.checkMoneyPrize() == true))
	{
		return "Sweets  |>Korona<|  Приятного апетита! ";
	}
	else if ((automate.getChoise() == 2) && (automate.checkMoneyPrize() == true))
	{
		return "Sweets  |>Milka<|  Приятного апетита! ";
	}
	else if ((automate.getChoise() == 3) && (automate.checkMoneyPrize() == true))
	{
		return "Sweets  |>Snikers<| Приятного апетита! ";
	}
	else if ((automate.getChoise() == 4) && (automate.checkMoneyPrize() == true))
	{
		return "Sweets  |>Nuts<|  Приятного апетита! ";
	}
}
User::User()
{
	this->usermoney = 1000;
	this->usersweets = 0;
	this->userchoice = 0;
}
User::~User()
{
	cout << "I am working";
}
void User::setUserMoney()
{
	cout << "Сколько у меня денег???"<<endl;
	cin >> usermoney;
}
double User::getUserMoney()
{
	return this->usermoney;
}
void User::setUserSweets(double usersweets)
{
	this->usersweets = usersweets;
}
double User::getUserSweets()
{
	return this->usersweets;
}

double User::giveMoney()
{
	double summa = 0;
	int k;

	do
	{
		cin >> k;
		if (k == 1 || k == 2 || k == 10 || k == 20 || k == 5)
		{
			this->usermoney -= k;
			summa += k;

		}

		else if (k != 0)
			cout << "Пожалуйста внесите кюпюры номиналом 1  2  5  10 или 20 доларов, попробуйте ещё раз!" << endl;

	} while (k != 0);
	return summa;
}
int User::doChoise()
{

	int g;
	do {
		cin >> g;
		if (g < 1 || g > 4)
		{
			cout << "Неверний ответ! Попробуйте ещё раз!"<<endl;
		}
	} while (g < 1 || g > 4);
	this->userchoice = g;
	return userchoice;
}
void User::getSdacha(Automate & automate)
{
	cout << "Ваша сдача" << automate.getDifferently() << " $. Незабудьте забрать сдачу!"<<endl;
	this->sdacha = automate.getDifferently();
}
Header.h
#include<iostream>
#include<string>

using namespace std;

class Automate;

class Candy
{
protected:
	double price;
};

class Sweets : public Candy
{
private:
	string name;
public:
	Sweets();
	~Sweets();
	void setName(string name);
	string getname();
	void setPrice(double price);
	double getPrice();
	string obgortka(Automate& automate);
};

class User
{
private:
	double usermoney;
	int usersweets;
	int userchoice;
	double sdacha;
public:
	User();
	~User();

	void setUserMoney();
	double getUserMoney();

	void setUserSweets(double usersweets);
	double getUserSweets();

	//void setUserChoice(double userchoice);
	//double getUserChoice();

	double giveMoney();
	int doChoise();
	void getSdacha(Automate& automate);
};


class Automate
{
private:
	double money;
	double numbersweets;
	int choise;
	double differntly;
	void plusSumMoney();
	class Display
	{
	private:
		string massege;
	public:
		void Menuchoice();
		void setMassege(string massege);
		string printMassege();
	};
	Display display;
public:
	int getChoise();
	double getMoney();
	Automate();
	~Automate();
	void MenuforYou();
	void printMassege();
	void getMoneyFromuser(User& user);
	void getChoiseFromUser(User& user);
	bool checkMoneyPrize();
	void giveSweets(Sweets& sweets, Automate& automate);
	void plusSweets();
	void setMoney(double money);
	//double getMoney() { return this->money; }
	double getDifferently();
};
source.cpp
#include<iostream>
#include<string>
#include"Header.h"

int main()
{
	setlocale(LC_ALL, "ru");
	Automate a;
	Sweets c;
	User u;
	u.setUserMoney();
	a.MenuforYou();
	a.getMoneyFromuser(u);
	a.getChoiseFromUser(u);
	a.checkMoneyPrize();
	c.obgortka(a);
	a.giveSweets(c, a);
	u.getSdacha(a);
	system("pause");
	return 0;
}