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Cascade constructor and destructor call

#include <iostream> using namespace std; class base  {  public:    base(void) {cout << "Constructing base.\n";}    ~base(void) {cout << "Destructing base.\n";}  }; class derived1 : public base  {  public:    derived1(void) {cout << "Constructing derived1.\n";}    ~derived1(void) {cout << "Destructing derived1.\n";}  }; class derived2 : public derived1  {  public:    derived2(void) {cout << "Constructing derived2.\n";}    ~derived2(void) {cout << "Destructing derived2.\n";}  }; int main(void) {    derived2 object; }