How do you access the 'x' member of a Point variable named p?

• A. p.x
• B. p.x()
• C. p->x
• D. p.xValue

Answer: (A)

Accessing a member of an actual object uses the dot operator. If x is a data member of the Point object, you read or assign it with p.x. The form p.x() would be a function call, which only makes sense if x were a member function. The arrow operator, p->x, is used when you have a pointer to a Point, not a plain object variable. And p.xValue would refer to a different member named xValue, not x. So the correct access is p.x.