An Overloaded + Operator Takes a Class Object and a Double

question 9

Multiple Choice

An overloaded + operator takes a class object and a double as operands. For it to be commutative (i.e., a + b and b + a both work) :

• A) operator+ must be a member function of the class from which the objects are instantiated.
• B) operator+ must be a non-member function.
• C) It must be overloaded twice; the operator+ function that takes the object as the left operand must be a member function, and the other operator+ function must be a global function.
• D) The + operator cannot be overloaded to be commutative.

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