What are the different scopes of enums in C++?

What are the different scopes of enums in C++?

In C++, enums can have different scopes: local, class, and global. Local enums are defined within a function, class enums are defined within a class, and global enums are defined outside any function or class.

Can you give me an example of a class enum?

Sure! Here's an example:

class Color {
public:
    enum Shade { RED, GREEN, BLUE };
};

In this case, Shade is an enum defined within the Color class.

What about the global enum? How is it defined?

A global enum is defined outside of any class or function. For example:

enum Direction { NORTH, SOUTH, EAST, WEST };

This enum can be accessed from anywhere in the code.

Are there any advantages to using scoped enums?

Yes, scoped enums (introduced in C++11) provide better type safety and avoid name clashes. They require explicit qualification, which makes the code clearer.