When you use a strongly typed enumerator in C++11 you must prefix the enumerator with the name of the enum followed by the :
:
operator.

Question

When you use a strongly typed enumerator in C++11 you must prefix the enumerator with the name of the enum followed by the :
:
 operator.

Quizplus · Accepted Answer

In C++11, when using a strongly typed enumerator, the syntax is "enum class Name : underlying_type { enumerator1, enumerator2, ... };" where the ":" operator is used to specify the underlying data type. When accessing the enumerators, you must prefix them with the name of the enum followed by the "::" operator, not the ":" operator.

When You Use a Strongly Typed Enumerator in C++11 You