QtDesignPatterns/builderpattern/foodinterface.h

#include "packinterface.h"
#include <string>

class Food
{
public:
    Food(){}
    virtual ~Food(){}
    virtual Packing *getPack() = 0;
    virtual string getName() = 0;
    virtual float getPrice() = 0;
};

class Burger: public Food
{
public:
    Packing *getPack()
    {
        return new Wrapper();
    }
    virtual string getName() = 0;
    virtual float getPrice() = 0;
};

class ColdDrink: public Food
{
public:
    Packing *getPack()
    {
        return new Bottle();
    }
    virtual string getName() = 0;
    virtual float getPrice() = 0;
};

class VegBurger: public Burger
{
public:
    string getName()
    {
        return "Veg Burger";
    }
    float getPrice()
    {
        return 25.0f;
    }
};

class ChickenBurger: public Burger
{
public:
    string getName()
    {
        return "Chicken Burger";
    }
    float getPrice()
    {
        return 50.5f;
    }
};

class Coke: public ColdDrink
{
public:
    string getName()
    {
        return "Coke";
    }
    float getPrice()
    {
        return 30.0f;
    }
};

class Pepsi: public ColdDrink
{
public:
    string getName()
    {
        return "Pepsi";
    }
    float getPrice()
    {
        return 35.0f;
    }
};