/*special thanks to josh greig for helping on qa on this as below : https://www.sololearn.com/Discuss/2737495/?ref=app */ #include #include #include #include using namespace std; //************** Base class class Test { protected: string A; public: Test(string); virtual void print() const; virtual Test& clone() const; }; Test::Test(string a): A(a) { } void Test::print() const { cout << A << endl; } Test& Test::clone() const { return const_cast(*this); } //************** Derived class 1 class TestSubclassA : public Test { protected: int F; public: TestSubclassA(string,int); void print() const; TestSubclassA& clone() const override; }; TestSubclassA::TestSubclassA(string a,int f) : Test(a),F(f) { } void TestSubclassA::print() const { cout << A << "---" << F << endl; } TestSubclassA& TestSubclassA::clone() const { return const_cast(*this); } //************** Derived class 2 class TestSubclassB : public Test { protected: int F; public: TestSubclassB(string,int); void print() const; TestSubclassB& clone() const override; }; TestSubclassB::TestSubclassB(string a,int f) : Test(a),F(f) { } void TestSubclassB::print() const { cout << A << "---" << F << endl; } TestSubclassB& TestSubclassB::clone() const { return const_cast(*this); } int main() { /*vector> v; v.emplace_back(make_shared("a",2)); for(auto& elem : v) { for(int i=0;i<10;++i) { auto& copy = elem->clone(); copy.print(); } }*/ vector> vi; TestSubclassA obj1("b",3); Test obj2("c"); vi.push_back(obj1); vi.push_back(obj2); for(Test& elem : vi) { for(int i=0;i<3;++i) { auto copy = elem.clone(); cout << typeid(elem).name() << endl; copy.print(); } cout << endl << "**********" << endl << endl; } return 0; }

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