The following C++ function is impure. True or False?

Question

BlackTom AI · Accepted Answer

The question asks whether the given C++ function is impure and provides two answer choices: True and False.
Option 1: True. This is incorrect because the function does not produce any observable side effects (no writes to global state, I/O, or static/global variables). It only reads the input vector nums and computes a local sum, returning the result. Therefore, the function is pure, not impure.
Option 2: False. This is the correct choice because purity means a function’s output depends solely on its input and it has no side effects. Since sumOfSquares only uses the provided nums and does not modify external state, its behavior is deterministic for the same input, satisfying the criteria for a pure function.
In summary, the statement that the function is impure is false, since the implementation adheres to the defining characteristics of a pure function.

CPT_S-355-PULLM-1-LEC Scheduled Quiz 1

The following C++ function is impure. True or False?

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