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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,30 @@ #define DECLARE_ENUM(E) struct E { public: E(int value = 0) : _value((__Enum)value) { } E& operator=(int value) { this->_value = (__Enum)value; return *this; } operator int() const { return this->_value; } enum __Enum { #define END_ENUM() }; private: __Enum _value; }; #include <iostream> using namespace std; class B { B &operator=(const B &); }; class A { B member; }; DECLARE_ENUM(FileSystem) Read = 0x1, Write = 0x2 END_ENUM() DECLARE_ENUM(DataBase) Read = 0x1, Write = 0x2 END_ENUM() int main() { FileSystem hello = FileSystem::Read; cout << hello << endl; return 0; }