about member class object

[nanger]

if there is a class object which is a member of another class
i.e

class in
{.....};

class out
{
  private:
        in in_example;
        .....        

};

when the out class constructor is called
will the in class constructor be called or not?

[helios]

Yes.
Moreover, you can specify which constructor will be called with an initializer list.