Enumerations

Enumerations are often written with typedefs:

typedef enum _ErrorCode { ERROR_CODE_NOT_FOUND, ERROR_CODE_BAD_FORMAT, ERROR_CODE_UNKNOWN } ErrorCode;

But also recognized:

typedef enum { ERROR_CODE_NOT_FOUND, ERROR_CODE_BAD_FORMAT, ERROR_CODE_UNKNOWN } ErrorCode;

And we also recognize the non-ANSI construct:

typedef enum _ErrorCode ErrorCode; enum _ErrorCode { ERROR_CODE_NOT_FOUND, ERROR_CODE_BAD_FORMAT, ERROR_CODE_UNKNOWN };