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#include <iostream> #include <cstring> using namespace std; class Base { public: Base() : value_(10) , hoge_(20) { cout << "Base::Base()" << endl; } virtual ~Base() { cout << "Base::~Base()" << endl; } void print() { cout << value_ << endl; } private: int value_; int hoge_; }; class Derivation : public Base { public: Derivation() : value_(100) , hoge_(10) { cout << "Derivation::Derivation()" << endl; } virtual ~Derivation() { cout << "Derivation::~Derivation()" << endl; } void print() { cout << value_ << endl; } private: int value_; int hoge_; }; int main() { cout << "Base:" << sizeof(Base) << endl; cout << "Derivation:" << sizeof(Derivation) << endl; Base* d = new Derivation[10]; for (int i = 0; i < 10; ++i) { d[i].print(); } delete [] d; return 0; }
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