C++ 多态方面问题

#include<iostream>
using namespace std;

class Fish
{
public:
    virtual Fish* Clone()= 0;
    virtual void Swim() = 0;
    virtual ~Fish();
};

class Tuna:public Fish
{
public:
    Fish* Clone() override
    {
        return new Tuna(*this);
    }
   
    void Swim()override final
    {
        cout<<"Tuna swims fast in the sea"<<endl;
    }
};

class BluefinTuna final:public Tuna
{
public:
    Fish* Clone() override
    {
        return new BluefinTuna(*this);
    }
   
    //cannot override Tuna::Swim as it is"final" in Tuna
};

class Carp final:public Fish
{
    Fish* Clone() override
    {
        return new Carp(*this);
    }
    void Swim() override final
    {
        cout<<"Carp swims slow in the lake"<<endl;
    }
};

int main()
{
    const int ARRAY_SIZE = 4;
   
    Fish*myFishes[ARRAY_SIZE] = {NULL};
    myFishes[0] = new Tuna();
    myFishes[1] = new Carp();
    myFishes[2] = new BluefinTuna();
    myFishes[3] = new Carp();
   
    Fish*myNewFishes[ARRAY_SIZE];
    for(int index = 0;index<ARRAY_SIZE;++index)
       myNewFishes[index] = myFishes[index]->Clone();
      
       //invoke a virtual method to check
       for(int index = 0;index < ARRAY_SIZE;++index)
       myNewFishes[index]->Swim();
      
       //memory cleanup
       for(int index = 0; index<ARRAY_SIZE;++index)
       {
           delete myFishes[index];
           delete myNewFishes[index];
       }
      
       return 0;
} 这个是编译器出现的报错，请教一下大神，这是编译器告诉我，目前编译器的版本不支持C++2011标准码？如果是，怎么解决啊？是去官网更新，还是自己设置一下？上次也是百度查了一下，设置，然后编译器直接就不编译了，虽然没有出现报错，我用的是DEV-C++5.11这个编译器。谢谢各位大神！！！