When a derived class object is created using constructors, it is created in the following order:
The following example demonstrates this:
#include <iostream> using namespace std; struct V { V() { cout << "V()" << endl; } }; struct V2 { V2() { cout << "V2()" << endl; } }; struct A { A() { cout << "A()" << endl; } }; struct B : virtual V { B() { cout << "B()" << endl; } }; struct C : B, virtual V2 { C() { cout << "C()" << endl; } }; struct D : C, virtual V { A obj_A; D() { cout << "D()" << endl; } }; int main() { D c; }
The following is the output of the above example:
V() V2() B() C() A() D()
The above output lists the order in which the C++ run time calls the constructors to create an object of type D.
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