enum in class

[Teddy]

what is the special meaning of enum members in class ?

 

[Larry I Smith]

what is the special meaning of enum members in class ?

An example:

--- en.cpp ---

// a global enum named MyColor
enum MyColor { Red, Green, Blue };

// a simple class with an enum and a variable of that
// enum type
class Test
{
public:
enum TestEnum
{
value1,
value2
};

TestEnum enumVar;
};

int main()
{
// a variable named 'clr' of type 'MyColor'
// with a value of 'Green'
MyColor clr = Green;

// a Test object named 'tst'
Test tst;

// a variable named 'value' of type 'Test::TestEnum'
// with a value of 'Test::value2'
Test::TestEnum value = Test::value2;

// assign the value 'Test::value1' to the
// 'enumVar' member of 'tst'
tst.enumVar = Test::value1;

return 0;
}


Regards,
Larry

 

[Larry I Smith]

An example:

--- en.cpp ---

// a global enum named MyColor
enum MyColor { Red, Green, Blue };

// a simple class with an enum and a variable of that
// enum type
class Test
{
public:
enum TestEnum
{
value1,
value2
};

// a constructor to complete the example.
// sets 'enumVar' to 'value2' when a
// Test object is created
Test() : enumVar(value2) {}

TestEnum enumVar;
};

int main()
{
// a variable named 'clr' of type 'MyColor'
// with a value of 'Green'
MyColor clr = Green;

// a Test object named 'tst'
Test tst;

// a variable named 'value' of type 'Test::TestEnum'
// with a value of 'Test::value2'
Test::TestEnum value = Test::value2;

// assign the value 'Test::value1' to the
// 'enumVar' member of 'tst'
tst.enumVar = Test::value1;

return 0;
}


Regards,
Larry

To complete the example, I added a default constructor above.
The example now demonstrates most of the rules for using
global and class enums.

Regards,
Larry

 

[Rolf Magnus]

what is the special meaning of enum members in class ?

There is no special meaning. It means the same as an enum outside any class.