Garbage Return Value

Hello guys I have gotten my program to compile but I am having a problem with my calculations, it is returning garbage. Can someone please look over this and let me know what I am doing wrong in the calculations. I have tried numerous things to get this fixed and nothing is working.

//Lynette Wilkins
//Week 8
#include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;

class HotelRoom
{
protected:
	int k;  // room num
	int occup_stat;
	double daily_rt;

	// guest and daily rate will be added here in weeks ahead 
public:
	HotelRoom(int i = 0, int occup = 0, double rate = 89.00); // one argument constructor for now
	HotelRoom(const HotelRoom&); //copy constructor
	~HotelRoom(); //deconstructor

};

HotelRoom::HotelRoom(int i, int occup, double rate) : k(i)
{
	cout <<endl;
	cout<< "HotelRoom room number: "
		<<k<< endl;
}

HotelRoom::HotelRoom(const HotelRoom& room_r) :k(room_r.k)
{
	cout<<endl;
	cout<<"(HotelRoom copy constructor executed)"<<endl;
}
HotelRoom::~HotelRoom()
{
	cout <<endl;
cout<<"(HotelRoom destructor executed)"<<endl;

}

class GuestRoom : public HotelRoom
{
protected:
	int capacity;
	int status;
	int days;
	double gbill;

public:
	GuestRoom(int c = 0, int s = 0, int d = 0);
	GuestRoom(const GuestRoom &);
	~GuestRoom(); 
	double Calculate_Bill();


};

GuestRoom::GuestRoom(int c, int s, int d) : HotelRoom(k = 123), capacity(c), status(s), days(d)
{
	cout<<endl;
	cout<<"**GuestRoom constructor executed**"<<endl<<endl;		
	    cout <<"Maximum number of guest per room: "<<capacity<<endl;
		cout <<"Number of guest occupying room: "<<status<<endl;
		cout <<"Days that room is going to be occupied: "<<days<<endl;
}

GuestRoom::GuestRoom(const GuestRoom & hroom_r)
	:HotelRoom(hroom_r), capacity(hroom_r.capacity)
{
	cout<<endl;
	cout<<"**GuestRoom copy constructor executed**"
		<<endl;
}
GuestRoom::~GuestRoom()
{
	cout<<endl;
	cout<< "**GuestRoom destructor executed**"<<endl;
}

double GuestRoom::Calculate_Bill()
{
	gbill = daily_rt*days*occup_stat;

	return gbill;
}


class MeetingRoom : public HotelRoom
{
protected:
	int seats;
	int status;
	double mbill; 
	

public:
	MeetingRoom(int s = 0, int st = 0);
	MeetingRoom(const MeetingRoom &);
	~MeetingRoom();
	double Calculate_Bill(int);
	void Display();

};

MeetingRoom::MeetingRoom(int s, int st) : HotelRoom(k = 123), seats(s), status(st)
{
	cout<<endl;
	cout<<"Constructor Executed "<<seats<<endl;
	
		
	    
}

MeetingRoom::MeetingRoom(const MeetingRoom & mroom_r)
	:HotelRoom(mroom_r), seats(mroom_r.seats)
{
	cout<<endl;
	cout<<"~~MeetingRoom copy constructor executed~~"
		<<endl;
}
MeetingRoom::~MeetingRoom()
{
	cout<<endl;
	cout<< "~~MeetingRoom destructor executed~~"
		<<endl;
}
	
		
double MeetingRoom::Calculate_Bill(int seat)
{
	seats = seat;
	
	
	mbill = seat * 10.00 + 500.00;

	return mbill;
}

void MeetingRoom::Display()
{
	
	cout<< setprecision(2)
		<<setiosflags(ios::fixed)
		<<setiosflags(ios::showpoint);

	cout<<"Seats in the Meeting Room: "<<seats<<endl;
	cout<<"Status of the Meeting Room:"<<status<<endl;
	cout<<"Bill for renting the room: "<<mbill<<endl;
}

	
int main()
{
	HotelRoom room_object1(123, 4, 89.00);
	GuestRoom groom_object1(5,3,4);
	GuestRoom groom_object2 = groom_object1;
	MeetingRoom mroom_object1(100,1);
	MeetingRoom mroom_object2 = mroom_object1;
	cout <<endl;
	mroom_object1.MeetingRoom::Display();

	system("PAUSE");
	return 0;
}