Objects in C++ (II)

• Member functions are defined just like normal functions except they must have the class-name:: junk before their name (and after their type!).

• Member functions may use any other member function or member data without needing the object-name. qualification. It doesn't matter whether the the function/data is private or public.

• All of the member functions are typically put in their own file, usually called class-name.C. All of the interface is usually put in class-name.h. If all is well planned, you could replace both files with new ones based on an entirely different implementation (storing the triangle's internal angles or vertex coordinates, for example), and as long as the public interface is the same, nothing else should be affected.

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