Code RoomNaN comparison breaks threshold
HardPrep Room Coding #1904

NaN comparison breaks threshold

Code reviewCode quality & reviewSenior–Staff~20 min

Review this C++ routine that finds the max of a sensor reading buffer.

A dropped sensor occasionally writes a NaN into the buffer. Downstream code gates an actuator when `maxReading(v)` exceeds a threshold.

What a strong answer looks like

Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix, specific and kind.

0:00 of about 20 min
Mark a line and say what kind of problem it is.0 findings
1double maxReading(const std::vector<double>& v) {
2 double best = -std::numeric_limits<double>::infinity();
3 for (double x : v) {
4 if (x > best) {
5 best = x;
6 }
7 }
8 return best;
9}
Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.