273.org 1.5 KB
Converting degrees
- Input Description
You will be given two lines of text as input. On the first line, you will receive a number followed by two letters, the first representing the unit that the number is currently in, the second representing the unit it needs to be converted to.
-
Examples of valid units are:
d for degrees of a circle
r for radians
- Output Description
You must output the given input value, in the unit specified. It must be followed by the unit letter. You may round to a whole number, or to a few decimal places. Challenge Input
-
3.1416rd
90dr
- Challenge Output 180d 1.57r
- Bonus
Also support these units:
c for Celsius f for Fahrenheit k for Kelvin
-
If the two units given are incompatible, give an error message as output.
- Bonus Input
-
212fc
70cf
100cr
315.15kc
- Bonus Output
-
100c
158f
No candidate for conversion
42c
- Notes
See here for a wikipedia page with temperature conversion formulas. See here for a random web link about converting between degrees and radians.
Apparently Emacs defines float-pi to be defined as pi! Very cool!
float-pi
3.141592653589793
(defun 273/rad-to-deg (x)
"Let's convert radians to degrees"
(* x (/ 180 float-pi)))
273/rad-to-deg
(defun 273/deg-to-rad (x)
"convert degrees to radians"
(* x (/ float-pi 180)))
273/deg-to-rad