Enum difficulty

[Zaliron]

I'm trying to create a Turtle for an OpenGL project. My professor recommended using this in the class:

enum Pen_States {UP, DOWN};
struct Turtle_State 
{ 
	float x,y,angle;
};
struct Turtle_Info
{
	Turtle_State Current_State;
    Pen_States Pen;
    int Pen_Color;
};
Turtle_State TS;
Turtle_Info TI;

When I move on to the implementation file, however, when I try to use this:

if(CP.TI.Pen == UP) //CP is a Turtle object

It gives an error saying that UP is undefined. What am I doing wrong?

[hanst99]

Is Pen_States inside a namespace (other than the one your implementation is in)?