Which of the following function prototypes overloads the != operator for the class rectangleType?
A) bool operator!=(rectangle&) const;
B) bool operator!=(const rectangleType&) const;
C) int operator!=(const rectangleType) const;
D) int operator!=(rectangle&) const;

Question

Quizplus · Accepted Answer

In order to overload the != operator for the class rectangleType, we need to compare two objects of type rectangleType. Therefore, the correct prototypes need to have a const reference parameter of type rectangleType. Option B is the correct prototype as it satisfies this requirement. Option A has a non-const reference parameter which is incorrect. Option C returns an integer instead of a boolean value which does not satisfy the requirement of the != operator. Option D has a non-const reference parameter which is incorrect.

Which of the Following Function Prototypes Overloads the != Operator