Convert string to decimal number in ruby

Question

I need to work with decimals. In my program, the user need to put a number with decimals to convert that number.

The problem is: If I try to convert the argument into a

Answer 1

If you want more accurate answer with the calculation to avoid bug like this https://www.codecademy.com/en/forum_questions/50fe886f68fc44056f00626c you can use conversion to decimal example :

require 'bigdecimal'
require 'bigdecimal/util'

size = ARGV[0]
size = size.to_d

this should make the printed number become decimal but if you want to make it as float again just put this to_f again

size=size.to_f

puts size