c++ 创建型模式-原型模式(Prototype)

 1  #include <iostream>
 2 class  Prototype
 3 {
 4 public:
 5     Prototype() {}
 6     virtual ~Prototype() {}
 7     virtual Prototype* Clone() = 0;
 8     virtual void printCount() = 0;
 9 };
10  class ConcretePrototype : public Prototype
11  {
12  public:
13      ConcretePrototype() {}
14      ConcretePrototype(int num):m_count(num) {}
15      ConcretePrototype(const ConcretePrototype& p)
16      {
17          this->m_count = p.m_count;
18      }
19 
20      virtual ~ConcretePrototype() {}
21      virtual Prototype* Clone()
22      {
23          return new ConcretePrototype(*this);
24      }
25      virtual void printCount()
26      {
27          std::cout << "m_count : " << m_count << std::endl;
28      }
29  private:
30      int m_count;
31  };
32  
33  int main()
34  {
35      Prototype* p = new ConcretePrototype(5);
36      Prototype* p1 = p->Clone();
37 
38      p->printCount();
39      p1->printCount();
40 
41      delete p;
42      delete p1;
43      system("pause");
44  }