If you are asking the order of the parent and derived class constructors, see Are parent class constructors called before initializing variables?.
In short, the base (or parent) class (looks like A
in your case) constructor will complete first.
Pregunta
For example:
Class A
{
A();
}
Class B
{
A a;
B(A& m_a) : a(m_a)
}
Which constructor will apply first? the A() constructor of the B parent, or the A object inside class B?
Solución
If you are asking the order of the parent and derived class constructors, see Are parent class constructors called before initializing variables?.
In short, the base (or parent) class (looks like A
in your case) constructor will complete first.
Otros consejos
The parent constructor will execute first, then the subclass constructor will initialize the variable.