Issue in exersises solution.

[karrom185]

For exercise 3 in chapter 1 we have to half value, but in answer it's not halved.

3. Take the result from exercise 2, half it, and convert it back to Centigrade. You can use the generated constant variable (e.g. "res0") instead of copying and pasting the value yourself.

Answer

Using parentheses around the subtraction, which needs to occur before the multiplication and division, will give it highest precedence.

scala> 22.5 * 9 / 5 + 32
res0: Double = 72.5

scala> (res0 - 32) * 5 / 9
res1: Double = 22.5