OnlineGDB ^beta

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main.cpp

#include <iostream> #include <typeinfo> #include <typeindex> #include <memory> #include <vector> #include <array> #include <string> class Base { public: virtual ~ Base () { } }; class A:public Base { }; class B:public Base { }; using namespace std; int main () { A *a = new A; auto *ptr = dynamic_cast < B * >(a); if (!ptr) std::cout << "failed to cast" << std::endl; return 0; }

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