c++ - How to call base class copy constructor from a derived class copy constructor?

Question

Just like in the title, how do you call a base class copy constructor from a derived class copy constructor?

Answer 1

您可以在初始化列表中指定基本初始化：

Derived:: Derived( const Derived& other ): Base( other )
{ /* ... */ }

Answer 2

Derived( Derived const& d )
: Base(d)
/* some member initialization */
{
  /* ... */
}

我错过了什么吗？