Help!! I don't know how to implement the Receipt Coding

[WanHazyan]

I already made the code for the program and receipt. The problem here, I don't know where I can implement the receipt coding inside the program coding
Below is both of the coding


program coding

Header File

  #include <iostream>
#include <string>

#include <conio.h>
using namespace std;

string roomType;
int roomNumber;
int bed;
int table;
int towel;
int sofa;
string name;
int phone;
int id;


class Node
{
public:

	string roomType;
	int roomNumber;
	string name;
	
	int phone;
	int bed;
	int table;
	int towel;
	int sofa;
	Node *next;
	int id;
	 

	Node(int x, string a, int b, int c, int d, int e, Node *z)
	{
		roomType = a;
		roomNumber = x;
		bed = b;
		table = c;
		towel = d;
		sofa = e;
		next = z;
	}
};

class user
{
public:
	int id;
	string name;
	user *next;
	int phone;

	user(int i, string y, user *z, int b) //COnstructor witn parameter
	{
		id = i; 
		name = y;
		next = z;
		phone = b;

	}
};

class Room
{
private:
	Node *head;
	int count;
public:
	Room();//Room(DoubleRoom);
	void Menu();
	void roomtype(int);
	void addRoom();
	void deleteRoom(int x);
	void viewRoom();
	void editRoom();

};

class Roomtype : Room
{
private:
	Node *head;
public:
	Roomtype();
	string single();
	string doubl();
	string supreme();

};

CPP File

#include <iostream>
#include <iomanip>
#include <string>
#include <conio.h>
#include "Room.h"
using namespace std;

Room::Room()
{
	head = NULL;
	int count = 0;
}

void Room::Menu()
{
	cout << "Welcome to Five Star Hotel" << endl;
	cout << "**************************" << endl;
	cout << "" << endl;
	cout << "\tMENU" << endl;
	cout << "1. Add room" << endl;
	cout << "2. Drop room" << endl;
	cout << "3. View data" << endl;
	cout << "4. Edit data" << endl;
	cout << "5. Exit " << endl;
	cout << "Please select your choice: " << endl;
}

void Room::addRoom()
{
	cout << "Please enter your information: " << endl;
	cout << " Enter Your Id  = ";
	cin >> id;
	
	cout << " Enter Your Name = ";
	cin >> name;
	cout << " Enter Your Phone Number = ";
	cin >> phone;
	cout << " Room type" << endl;
	cout << "\n1.single\n2.double\n3.supreme\n:";
	cin >> roomType;
	cout << "Room Number ";
	cin >> roomNumber;
	cout << "No of bed: ";
	cin >> bed;
	cout << "No. of Table: ";
	cin >> table;
	cout << "No. of Towel: ";
	cin >> towel;
	cout << "No. of Sofa: ";
	cin >> sofa;
	cout << "Room Registered." << endl;

	Node *p;
	if (head == NULL)
	{
		head = new Node(roomNumber, roomType, bed, table, towel, sofa, NULL);
	}
	else
	{
		p = head;
		while (p->next != NULL)
			p = p->next;
		p->next = new Node(roomNumber, roomType, bed, table, towel, sofa, NULL);
	}

	//count ++;
}

void Room::deleteRoom(int x)
{

	Node *del = NULL;
	Node *temp = head;
	Node *second = head;

	while (second != NULL && (second->roomNumber) != x)
	{
		temp = second;
		second = second->next;
	}
	if (second == NULL)
	{
		cout << x << "No Room Found" << endl;
	}
	else
	{
		del = second;
		second = second->next;
		temp->next = second;
		if (del == head)
		{
			head = head->next;
			temp = NULL;
		}
		delete del;
		cout << "Room number " << x << " was deleted" << endl;
	}
}

void Room::viewRoom()
{
	Node *p;
	p = head;
	cout << "Enter Customer's ID: ";
	cin >> id;
	if (p != NULL)
		cout << "Room Number: " << p->roomNumber << "\nRoom Type: " << p->roomType << "\nNumber of bed: " << p->bed << "\nNumber of Table: " << p->table << "\nNumber of Towel: " << p->towel << "\nNumber of sofa: " << p->sofa;
	else
		cout << "Room not found.\n";
}
void Room::editRoom()//This function is to edit customer details in the system
{
	int editing = 0; int typee = 0;

		Node *second = head;
		cout << " Enter id: ";
		int id;
		cin >> id;

		while (second != NULL && (second->id) != id) 

		{

			second = second->next;

		}

		if (second == NULL)

		{

			cout << id << " No Data Edited" << endl;
			return;

		}

		cout << " 1.Edit Name\n 2.Edit Phone Number";
		cin >> typee;

		if (typee == 1)
		{
			cout << " Enter Your New Name : " << endl;
			string newname;
			cin >> newname;
			second->name = newname;
			cout << " The name for id number " << id << " was edited." << endl;
		}

		if (typee == 2)
		{
			cout << "Please Enter Your New Phone Number";
			int newhp;
			cin >> newhp;

			while (second != NULL && (second->id) != id)
			{
				second = second->next;
			}

			if (second == NULL)
			{
				cout << id << " No Data Edited" << endl;
			}

			else
			{
				second->phone = newhp;
				cout << "The contact number for id umber " << id << " was edited." << endl;
			}
		}

}
int main()
{
	Room a1;

Main:
	a1.Menu();
	int choice = 0;
	cin >> choice;
	switch (choice)
	{
	case 1:
		system("cls");
		a1.addRoom();
		system("pause");
		system("cls");
		goto Main;
		break;
	case 2:
		system("cls");
		cout << "Enter Room Number: ";
		cin >> roomNumber;
		char a;
		cout << "Are you sure you want to drop this events? (y/n)" << endl;
		cin >> a;
		if (a == 'Y' || 'y')
		{
			a1.deleteRoom(roomNumber);
			system("pause");
			system("cls");
			goto Main;
		}
		else if (a == 'N' || 'n')
		{
			system("cls");
			goto Main;
		}
		else
		{
			cout << "Invalid input.\nPlease try again." << endl;
			fflush(stdin);
			cin.clear();
			goto Main;
		}
		break;
	case 3:
		system("cls");
		a1.viewRoom();
		system("pause");
		system("cls");
		goto Main;
		break;
	case 4:
		system("cls");
		a1.editRoom();
		system("pause");
		system("cls");
		goto Main;
		break;
	case 5:
		break;
	default:
		cout << "Invalid input.\nPlease try again." << endl;
		fflush(stdin);
		cin.clear();
		system("pause");
		goto Main;
		break;
	}
}

receipt coding

#include <cstdlib>
#include <iostream>
#include <iomanip>
using namespace std;

int main() 

{
	const double TAXRATE = 0.06;
	double total1 = 80.00, total2 = 120.00,total3 = 180.00, total4 = 250.00;
	double subTotal= 0.0, taxTotal= 0.0, totalDue= 0.0;
	
	subTotal = total1 + total2 + total3 + total4;
	taxTotal = subTotal * TAXRATE;
	totalDue = subTotal + taxTotal;
	
	cout<< "Here is your receipt\n"<<endl;
	cout << "-------------------------" << endl;
    
    // Output subtotals
    
    cout << setw(15) << right << "Subtotal: $" << setw(10) << right 
         << subTotal << endl;
    cout << setw(15) << right << "Tax Total: $" << setw(10) << right 
         << taxTotal << endl;    
    
    // Output double seperation line
    
    cout << "=========================" << endl;    
    
    cout << setw(15) << right << "Total Due: $" << setw(10) << right 
         << totalDue << endl;
    return 0;
}