Error: no matching function for call to ‘Order::Order()’ - c++

Question

#include <iostream>
using namespace std;
class Customer
{
public :
string email, name, address;
long telephoneNo;
int addNew()
{
cout<<"Enter the email, name, address and telephone no. of the user Please.\n";
cin>>email>>name>>address>>telephoneNo;
return 0;
}
int edit()
{
cout<<"Enter new name, email, address and telephone no. of user Please.\n";
cin>>email>>name>>address>>telephoneNo;
return 0;
}
int update()
{
cout<<"Enter new email, address and telephone no. of user Mr./Ms. "<<name<<" Please.\n";
cin>>email>>address>>telephoneNo;
return 0;
}
};
class Order : public Customer
{
public :
static int number;
const float price = 10000.0;
float payment;
string state, billingAddress;
bool created, paymentMade;
Customer *customer;
Order(Customer *customer)
{
number++;
this->customer = customer;
payment = price + (0.1f*price);
state = "West Bengal";
billingAddress = customer->address;
created = true;
paymentMade = false;
}
int setState(string state)
{
this->state = state;
return 0;
}
float getPrice()
{
return price;
}
};
int Order::number = 0;
class Passenger : public Order
{
public :
string name;
bool insurance, priorityBoarding;
float luggage, extraLuggage;
Order *order;
Passenger(Order *order)
{
char flag;
this->order = order;
name = order->customer->name;
cout<<"Enter the luggage amount for the customer Mr./Ms. "<<name<<", in kgs Please.\n";
cin>>luggage;
if(luggage > 15.0)
extraLuggage = luggage - 15.0f;
cout<<"Is the customer eligible for insurance. y/n? \n";
cin>>flag;
if(flag == 'y')
insurance = true;
else
insurance = false;
cout<<"Is the customer a priority boarder. y/n? \n";
cin>>flag;
if(flag == 'y')
priorityBoarding = true;
else
priorityBoarding = false;
}
Passenger get()
{
return *this;
}
int edit()
{
char flag;
cout<<"Please re-enter the name of the Passenger.\n";
cin>>name;
cout<<"Enter the luggage amount for the customer Mr./Ms. "<<name<<", in kgs Please.\n";
cin>>luggage;
if(luggage > 15.0)
extraLuggage = luggage - 15.0f;
cout<<"Is the customer eligible for insurance. y/n? \n";
cin>>flag;
if(flag == 'y')
insurance = true;
else
insurance = false;
cout<<"Is the customer a priority boarder. y/n? \n";
cin>>flag;
if(flag == 'y')
priorityBoarding = true;
else
priorityBoarding = false;
return 0;
}
int update()
{
char flag;
cout<<"Enter the luggage amount for the customer Mr./Ms. "<<name<<", in kgs Please.\n";
cin>>luggage;
if(luggage > 15.0)
extraLuggage = luggage - 15.0f;
cout<<"Is the customer eligible for insurance. y/n? \n";
cin>>flag;
if(flag == 'y')
insurance = true;
else
insurance = false;
cout<<"Is the customer a priority boarder. y/n? \n";
cin>>flag;
if(flag == 'y')
priorityBoarding = true;
else
priorityBoarding = false;
return 0;
}
};
class OrderFlight : public Order, public Passenger
{
public :
static int flights;
Passenger* passenger;
int addPassenger(Order *order)
{
Passenger* passenger = new Passenger(&order);
this->passenger = passenger;
return 0;
}
int removePassanger()
{
delete(&passenger);
return 0;
}
/*
float getPrice(Passenger *passenger)
{
Passenger* gPassenger = Passenger::get();
}
*/
};
int OrderFlight::flights = 50;
int main()
{
cout<<"Hello World";
return 0;
}
Getting the error ---
In constructor ‘Passenger::Passenger(Order*)’:
main.cpp:84:5: error: no matching function for call to ‘Order::Order()’
I am trying to send a pointer of the object of class Order in the constructor of Passenger, but getting this error instead. Did the same thing while passing the object or Order in the addPassenger() method of the OrderFlight class but did not get any error. Please help.

Answer 1

class Passenger : public Order says that a Passenger is an Order. That doesn't really make sense, and ultimately is the source of your error:
Part of constructing a Passenger involves constructing all of its base classes, which includes Order. However, Order does not have a default constructor, and you do not use a delegating constructor to tell it how to construct the Order part of itself, so it doesn't know what to do.
I would rethink your inheritance hierarchy here. Like what I mentioned above, class Order : public Customer doesn't make sense because it implies that Orders are Customers. class OrderFlight : public Order, public Passenger also doesn't make sense for the same reason.