Question relating to error C2243

hawkfan50 (3)
What does it mean by this:

"Access protection (protected or private) prevented conversion from a pointer to a derived class to a pointer to the base class."

When I try to instantiate an object like this

PizzaStore *nyStore = new NYPizzaStore();

that's when it gives the error. 

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//
// Sample      :  Lab 2
//
// Class       :  CST 276
//
// Author      :  Robert Halsey
//
// File        :  Pizza.h
//

#include <iostream>
#include <deque>
#include <string>

using namespace std;

#ifndef  Pizza_H
#define  Pizza_H

class Pizza
{

protected :

	string name;
	string dough;
	string sauce;
	deque<string> toppings;

public :

	void prepare() {

		cout << "Preparing " + name;
		cout << "Tossing dough...";
		cout << "Adding sauce...";
		cout << "Adding toppings: ";

		for (unsigned int i = 0; i < toppings.size(); i++) {
			cout << "   " + toppings[i];
		}
	}

	void bake() {
		cout << "Bake for 25 minutes at 350";
	}

	void cut() {
		cout << "Cutting the pizza into diagonal slices";
	}

	void box() {
		cout << "Place pizza in official box";
	}

	string getName() {
		return name;
	}
};

class NYStyleCheesePizza : Pizza {

public :

	NYStyleCheesePizza() { 
		
		name = "NY Style Sauce and Cheese Pizza";
		dough = "Thin Crust Dough";
		sauce = "Marinara Sauce";
 
		toppings.push_front("Grated Reggiano Cheese");
	}
};

class PizzaStore
{

public :

	Pizza createPizza( string type );

	Pizza orderPizza( string type ) {

		Pizza pizza;

		pizza = createPizza(type);
		
		pizza.prepare();
		pizza.bake();
		pizza.cut();
		pizza.box();

		return pizza;
	}

};

class NYPizzaStore : PizzaStore 
{

public :

	Pizza *createPizza( string item ) {

		if ( item == "cheese" ) 
		{
			return new NYStyleCheesePizza();
		} 
	}
};

#endif
Peter87 (11256)
Use public inheritance.
class NYStyleCheesePizza : public Pizza {

class NYPizzaStore : public PizzaStore
Last edited on
hawkfan50 (3)
Hahaha wow I am stuuuuuuuuuuuuuuuuuuuuupid. Thanks man.
hawkfan50 (3)
Hmm after I did that it started giving me a linker error when I tried this

1
2
 
	PizzaStore *nyStore = new NYPizzaStore();
	Pizza pizza = nyStore->orderPizza("cheese");


Last edited on
Zhuge (4664)
And the error was...?
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