A smart home monitoring system uses an algorithm to check the battery levels of various wireless sensors.
1 SET sensors TO ["hallway", "kitchen", "lounge", "bedroom", "garage", "garden"]
2
3 SET battery TO [0.12, 0.45, 0.08, 0.88, 0.02, 0.67]
4
5 SET index TO 0
6
7 WHILE index < 6 DO
8
9 IF (battery[index] < 0.1) THEN
10 SEND (sensors[index] & " low battery warning") TO DISPLAY
11
12 ELSE
13 IF (battery[index] >= 0.4) AND (battery[index] <= 0.6) THEN
14 SEND (sensors[index] & " check status") TO DISPLAY
15 END IF
16 END IF
17
18 SET index TO index + 1
19
20 END WHILE
The algorithm currently works with a fixed number of sensors.
Give the number of the line in the algorithm that would need to be amended to allow the algorithm to work for any number of sensors.