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Definition of Enumerator Constants
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Definition of Enumerator Constants

Enumerators are considered defined immediately after their initializers; therefore, they can be used to initialize succeeding enumerators. The following example defines an enumerated type that ensures that any two enumerators can be combined with the OR operator:

// enumerator_constants.cpp
enum FileOpenFlags
   OpenReadOnly  = 1,
   OpenReadWrite = OpenReadOnly  << 1,
   OpenBinary = OpenReadWrite << 1,
   OpenText = OpenBinary    << 1,
   OpenShareable = OpenText      << 1

int main()

In this example, the preceding enumerator initializes each succeeding enumerator.

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