Exercise: Adapter
This exercise puts the Adapter pattern into code.
Scenario
A heating system expects a thermostat that reports temperature in Fahrenheit. The only sensor
available is a CelsiusSensor that exposes a celsius() method returning an integer. Your
task is to write a CelsiusToFahrenheitAdapter that implements a FahrenheitThermometer
interface, so the driver calls fahrenheit() without ever knowing a Celsius sensor is underneath.
Commands
| Command | Behavior | Output |
|---|---|---|
["reading", celsius] | Set the sensor to celsius and return the Fahrenheit equivalent | "<f>F" |
The conversion formula uses integer division: f = c * 9 // 5 + 32. The result is always a whole
number — a reading of 37°C gives 98F, not 98.6°F.
Example
Input
5 reading 0 reading 100 reading -40 reading 20 reading 37
Output
32F 212F -40F 68F 98F
Explanation
Each `reading` command updates the sensor value and immediately asks the adapter for the Fahrenheit equivalent. 0 °C converts to 32 °F (the freezing point), 100 °C to 212 °F (boiling), and −40 °C to −40 °F, which is the point where the two scales coincide — a useful edge case to verify the formula handles negative inputs correctly.
Your task
Implement the skeleton in the editor below so the commands produce the output described above.