Is the enum inside a class static?

Question

In the bellow, the values of enum inside the class can be accessed by the name of the class.(I didn't even instantiate the class!)

class Shifting
{
public:
  enum Value: char
  {
    UP, RIGHT, DOWN, LEFT
  };

private:
  Value value_;
};


std::cout << Shifting::RIGHT << std::endl; // 1

Does this mean that enum within a class is static?

If not, how to statically declare an enum?

Answer 1

This

enum Value: char
{
  UP, RIGHT, DOWN, LEFT
};

this is a declaration of a type. It is not a data member of the enclosing class. The class has only this private data member.

Value value_;

of the enumeration data.

An enumerations declaration declares named enumerators. But they in turn are not data members of the enclosing class.

It is the same if you will declare a nested structure inside a class. For example

struct A
{
    struct B
    {
        int x = 10;
    };

    B b;
};

Here is only one data member of the class A that is B b. The data member inside the structure declaration only provides the declaration of the structure B.