Y and z are user-defined objects and the += operator is an overloaded member function. The operator is overloaded such that y += z adds z and y, then stores the result in y. Which of the following expressions is always equivalent to y += z?
A) y = y operator+= z
B) y.operator+=(z)
C) y = y + z
D) y operator+=(y + z)

Question

Quizplus · Accepted Answer

The overloaded += operator is a member function of y, so the correct syntax to invoke it is y.operator+=(z). This is always equivalent to y += z. The other options may or may not produce the same result depending on how the operator is implemented.

Y and Z Are User-Defined Objects and the += Operator