Day2_activities_answer_key.R

# Day 2 Activities - Answer Key

# 1. Custom Functions - Let's create a function temp_conv(), which converts the temperature in Fahrenheit (input) to the temperature in Kelvin (output). 
#    * We could perform a two-step calculation: first convert from Fahrenheit to Celsius, and then convert from Celsius to Kelvin. 
#    * The formula for these two calculations are as follows: temp_c = (temp_f - 32) * 5 / 9; temp_k = temp_c + 273.15. To test your function, 
#    * if your input is 70, the result of `temp_conv(70)` should be 294.2611.

temp_conv <- function(temp_f) {
  temp_c = (temp_f - 32) * 5 / 9
  temp_k = temp_c + 273.15
  return (temp_k)
}

# 2. Nesting Functions - Now we want to round the temperature in Kelvin (output of temp_conv()) to a single decimal place. Use the round() function with the newly-created  `temp_conv()` function to achieve this in one line of code. If your input is 70, the output should now be 294.3.

round(temp_conv(70), digits = 1)