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  1. #include<iostream>
  2. #include<vector>
  3.  
  4.     struct IObject
  5.     {
  6.         virtual ~IObject(){}
  7.         virtual IObject* Clone()=0;
  8.         virtual void Work()=0;
  9.     };
  10.  
  11.     struct Concrete_Object1: IObject
  12.     {
  13.         Concrete_Object1(){ std::cout<<"Concrete_Object1: was build\n";  }
  14.         Concrete_Object1(const Concrete_Object1& rhs) { std::cout<<"Concrete_Object1: was build by copy\n";  }
  15.         virtual void Work()               { std::cout<<"Concrete_Object1: working\n";    }
  16.         virtual ~Concrete_Object1()       { std::cout<<"Concrete_Object1: destroyed\n";  }
  17.         virtual Concrete_Object1* Clone() { return new Concrete_Object1(*this);          }
  18.     };
  19.     struct Concrete_Object2: IObject
  20.     {
  21.         Concrete_Object2(){ std::cout<<"Concrete_Object2: was build\n";  }
  22.         Concrete_Object2(const Concrete_Object2& rhs) { std::cout<<"Concrete_Object2: was build by copy\n";  }
  23.         virtual void Work()               { std::cout<<"Concrete_Object2: working\n";    }
  24.         virtual ~Concrete_Object2()       { std::cout<<"Concrete_Object2: destroyed\n";  }
  25.         virtual Concrete_Object2* Clone() { return new Concrete_Object2(*this);          }
  26.     };    
  27.  
  28.     struct Manager
  29.     {
  30.         ~Manager()
  31.         {
  32.             const size_t size = mObj.size();
  33.             for(size_t n=0;n<size;++n){ delete mObj[n]; mObj[n] = 0l; }
  34.         }
  35.  
  36.         void Connect(IObject* src){  mObj.push_back( src->Clone() ); }
  37.  
  38.         void Work()
  39.         {
  40.             const size_t size = mObj.size();
  41.             for(size_t n=0;n<size;++n){ mObj[n]->Work(); }
  42.         }
  43.         std::vector<IObject*> mObj;
  44.     };
  45.  
  46.  
  47. int main()
  48. {
  49.    Manager man;
  50.    IObject* agent1 = new Concrete_Object1();
  51.    IObject* agent2 = new Concrete_Object2();
  52.  
  53.    man.Connect(agent1);
  54.    man.Connect(agent2);
  55.  
  56.    delete agent1;
  57.    delete agent2;
  58.  
  59.    man.Work();
  60.  
  61.    return 0;
  62. }
Success #stdin #stdout 0.02s 2860KB
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stdin
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Standard input is empty
stdout
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Concrete_Object1: was build
Concrete_Object2: was build
Concrete_Object1: was build by copy
Concrete_Object2: was build by copy
Concrete_Object1: destroyed
Concrete_Object2: destroyed
Concrete_Object1: working
Concrete_Object2: working
Concrete_Object1: destroyed
Concrete_Object2: destroyed
https://ideone.com/YQhsm4
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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