Can I use an enum in a constructor for a class?

Question

I am trying to make a class and inside of the class I want to define an enum called Type. Can I use the enum I defined as a constructor for my class? If so, how do I access it outside of the class?

class Type {
public:
  enum TType { BLACK, WHITE, GRAY };
  Type(TType type, std::string value);
  ~Type();

...

This code doesn't give me any errors but when I try to create an instance of this class in another class it gives me an error because BLACK is not defined:

Type piece(BLACK, value);

Is there a special way to do this and still have TType as a class constructor for my Type class? This is my first time using enums so I don't know how they work exactly.

Anton Savin · Accepted Answer · 2016-01-16 01:07:01Z

4

Yes you can:

Type piece(Type::BLACK, value);

enum TType is in scope of class Type, so you have to use scope resolution when accessing it outside Type's body and member functions.

answered Jan 16, 2016 at 1:07

Anton Savin

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3 Comments

greyer Over a year ago

I tried that as well but when I do that it gives me the error: no instance of constructor "Type::Type" matches the argument list argument types are: (Type::TType, string)

greyer Over a year ago

Actually it seems to be a problem with some other part of my code. I'm not sure what it up but in some areas of my code it gives me an error but not others. I will try and figure it out but thanks for the help.

Anton Savin Over a year ago

@greyer no problem, BTW here is a clean example showing no error.

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