OnlineGDB ^beta

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main.cpp

#include <iostream> #include <memory> class Base { public: virtual ~Base() = default; virtual std::unique_ptr<Base> clone() const { std::cout << "Base::cloneRAII()\n"; return std::make_unique<Base>(*this); } virtual void execute() const { std::cout << "Base::process()\n"; } }; class Derived : public Base { public: virtual std::unique_ptr<Base> clone() const override { std::cout << "Derived::clone()\n"; return std::make_unique<Derived>(*this); } virtual void execute() const override { std::cout << "Derived::process()\n"; } }; void process(Base *b) { std::unique_ptr<Base> a = b->clone(); a->execute(); } int main() { Derived d; process(&d); }

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