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#include <iostream> using namespace std; class Contained1 { public: Contained1() { cout << "Contained1 ctor\n"; }//构造constructor ~Contained1() {cout << "Contained1 dtor\n";}//析构destructor }; class Contained2 { public: Contained2() { cout << "Contained2 ctor\n"; } ~Contained2() {cout << "Contained2 dtor\n";} }; class Contained3 { public: Contained3() { cout << "Contained3 ctor\n"; } ~Contained3() {cout << "Contained3 dtor\n";} }; class BaseContainer { public: BaseContainer() { cout << "BaseContainer ctor\n"; } ~BaseContainer() { cout << "BaseContainer dtor\n"; } private: Contained1 c1; Contained2 c2; }; class DerivedContainer : public BaseContainer { public: DerivedContainer() : BaseContainer() { cout << "DerivedContainer ctor\n"; } ~DerivedContainer(); private: Contained3 c3; }; DerivedContainer::~DerivedContainer() { cout << "DerivedContainer dtor\n"; } int main() { DerivedContainer dc; }执行结果如下：
Contained1 ctor Contained2 ctor BaseContainer ctor Contained3 ctor DerivedContainer ctor DerivedContainer dtor Contained3 dtor BaseContainer dtor Contained2 dtor Contained1 dtor上面的示例显示，在派生类的构造函数中，基类和成员构造函数的调用顺序。 首先，调用基构造函数，然后按照基类成员在类声明中出现的顺序对这些成员进行初始化，然后，调用派生构造函数。 析构函数的执行顺序与构造函数相反，可类比于穿衣服和脱衣服。
