C++ Primer, Fifth Edition

15.7.4. Inherited Constructors

Under the new standard, a derived class can reuse the constructors defined by its direct base class. Although, as we’ll see, such constructors are not inherited in the normal sense of that term, it is nonetheless common to refer to such constructors as “inherited.” For the same reasons that a class may initialize only its direct base class, a class may inherit constructors only from its direct base. A class cannot inherit the default, copy, and move constructors. If the derived class does not directly define these constructors, the compiler synthesizes them as usual.

A derived class inherits its base-class constructors ...