c++ user defined types question

[devil0150]

I made a vector2D class with a "double magnitude;" data member. I also have some functions that take double as arguments. Is there any way I can put a vector2D object as an argument to these functions instead of "vector2D.magnitude"? If so, does it work only if magnitude is public or does it also work as private?

[BC_Programmer]

make the structure public in the same namespace as the class but not in the same class. I believe you can simply place the definition immediately before the class definition.