How to call base class copy constructor from a derived class copy constructor? [duplicate]

问题

This question already has an answer here:

• Why aren't copy constructors “chained” like default constructors or destructors? 3 answers
• Calling the base class constructor from the derived class constructor 5 answers

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

回答1:

You can specify base initialization in the initialization list:

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

回答2:

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

Am I missing something?

来源：https://stackoverflow.com/questions/17311382/how-to-call-base-class-copy-constructor-from-a-derived-class-copy-constructor