mcas

Your mission

Return the averaged reading of two sensors, or a refusal when they disagree.

today's brief

The 737 MAX carries two angle of attack sensors, and the MCAS system that pushed the nose down listened to exactly one of them at a time. When that one vane was wrong, nothing on the aircraft was watching to disagree with it. Two crashes, 346 people. The fix Boeing shipped was the one every engineer would have written on day one: read both, and if they do not agree, trust neither.

See it in action

trusted_aoa(120, 124, 10)

Expected result

Your checklist

For your own tracking. Tests grade your code.

left and right are the two readings, in tenths of a degree, both non-negative.
When they differ by at most tolerance, return their average, truncated.
When they differ by more than tolerance, there is no trustworthy reading: return -1.

More examples

trusted_aoa(120, 200, 10)

Expected result

-1

trusted_aoa(100, 110, 10)

Expected result

Constraints

Expected files

sensor.c

Allowed functions

None. Write every helper yourself.

Back to compete

Solutions

mcas

Your mission

Return the averaged reading of two sensors, or a refusal when they disagree.

today's brief

See it in action

trusted_aoa(120, 124, 10)

Expected result

Your checklist

For your own tracking. Tests grade your code.

left and right are the two readings, in tenths of a degree, both non-negative.
When they differ by at most tolerance, return their average, truncated.
When they differ by more than tolerance, there is no trustworthy reading: return -1.

More examples

trusted_aoa(120, 200, 10)

Expected result

-1

trusted_aoa(100, 110, 10)

Expected result

Constraints

Expected files

sensor.c

Allowed functions

None. Write every helper yourself.

Back to compete

Solutions