If a certain object's data members need to be frequently modified by const functions, it is best to:
A) Declare the member values non-const.
B) Declare the member values mutable.
C) Use const_cast to make the member values modifiable.
D) Use static_cast to make the member values modifiable.

Question

Quizplus · Accepted Answer

Declaring the member values mutable allows them to be modified by const functions without violating const correctness. This is a better choice than declaring the member values non-const, which could lead to unintentional modifications by non-const functions. Using const_cast or static_cast to make the member values modifiable is unsafe and should be avoided.

If a Certain Object's Data Members Need to Be Frequently