freecodecamp--freecodecamp/curriculum/challenges/english/blocks/daily-coding-challenges-javascript/68cae5b538ff798bbd4da00a.md

id, title, challengeType, dashedName

id	title	challengeType	dashedName
68cae5b538ff798bbd4da00a	Challenge 72: Thermostat Adjuster 2	28	challenge-72

--description--

Given the current temperature of a room in Fahrenheit and a target temperature in Celsius, return a string indicating how to adjust the room temperature based on these constraints:

• Return "Heat: X degrees Fahrenheit" if the current temperature is below the target. With X being the number of degrees in Fahrenheit to heat the room to reach the target, rounded to 1 decimal place.
• Return "Cool: X degrees Fahrenheit" if the current temperature is above the target. With X being the number of degrees in Fahrenheit to cool the room to reach the target, rounded to 1 decimal place.
• Return "Hold" if the current temperature is equal to the target.

To convert Celsius to Fahrenheit, multiply the Celsius temperature by 1.8 and add 32 to the result (F = (C * 1.8) + 32).

--hints--

adjustThermostat(32, 0) should return "Hold".

assert.equal(adjustThermostat(32, 0), "Hold");

adjustThermostat(70, 25) should return "Heat: 7.0 degrees Fahrenheit".

assert.equal(adjustThermostat(70, 25), "Heat: 7.0 degrees Fahrenheit");

adjustThermostat(72, 18) should return "Cool: 7.6 degrees Fahrenheit".

assert.equal(adjustThermostat(72, 18), "Cool: 7.6 degrees Fahrenheit");

adjustThermostat(212, 100) should return "Hold".

assert.equal(adjustThermostat(212, 100), "Hold");

adjustThermostat(59, 22) should return "Heat: 12.6 degrees Fahrenheit".

assert.equal(adjustThermostat(59, 22), "Heat: 12.6 degrees Fahrenheit");

--seed--

--seed-contents--

function adjustThermostat(currentF, targetC) {

  return currentF;
}

--solutions--

function adjustThermostat(currentF, targetC) {
  const targetF = targetC * 1.8 + 32;
  const diff = Math.abs(targetF - currentF).toFixed(1);

  if (currentF < targetF) {
    return `Heat: ${diff} degrees Fahrenheit`;
  } else if (currentF > targetF) {
    return `Cool: ${diff} degrees Fahrenheit`;
  } else {
    return "Hold"
  }
}