c++设计模式——工厂模式 示例源码

【实例简介】包括简单抽象等模式

【实例截图】

【核心代码】

#include <iostream>

#include "PizzaStore.h"
#include "NewYorkPizzaStore.h"
#include "ShenZhenPizzaStore.h"


using std::cout;
using std::endl;

int main()
{
    pizza::PizzaStore *ps = new pizza::NewYorkPizzaStore();
    ps->orderPizza("Cheese");
    cout << endl;
    ps = new pizza::ShenZhenPizzaStore();
    ps->orderPizza("Calm");
    return 0;
}

#ifndef PIZZA_H
#define PIZZA_H

namespace pizza
{

class Pizza
{
public:
    Pizza(){}
    virtual ~Pizza(){}

    virtual void prepare() = 0;
    virtual void bake() = 0;
    virtual void cut() = 0;
    virtual void box() = 0;
};
}

#endif
#ifndef VEGGLE_PIZZA_H
#define VEGGLE_PIZZA_H

#include <iostream>
#include <string>

using std::string;
using std::cout;
using std::endl;

namespace pizza
{

class NewYorkVeeglePizza: public Pizza
{
public:
    NewYorkVeeglePizza(): name("Veggle Pizza")
    {
    };
    ~NewYorkVeeglePizza(){}; void prepare()
    {
        cout << "Preparing " << this->name << endl;
    }
    void bake()
    {
        cout << "Baking " << this->name << endl;
    }
    void cut()
    {
        cout << "Cutting " << this->name << endl;
    }
    void box()
    {
        cout << "Boxing " << this->name << endl;
    }
private:
    string name;
};
}

#endif

#ifndef PIZZ_STORE_H
#define PIZZ_STORE_H

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

using std::string;

namespace pizza
{

class PizzaStore
{
public:
    PizzaStore(){}
    virtual ~PizzaStore(){}

    virtual Pizza *createPizza(string type) = 0;

    Pizza *orderPizza(string type)
    {
        Pizza *pizza = this->createPizza(type);
        if (pizza == NULL)
        {
            return NULL;
        }
        pizza->prepare(); 
        pizza->bake(); 
        pizza->cut(); 
        pizza->box(); 

        return pizza;
    }
};
}
#endif