如何使用gets.chomp在Ruby中分割两个字符串？

Question

I try to divide two strings. Here's the code:

puts "Enter a weight in lbs: "
lbs = gets.chomp
stconversion = 14
stone = lbs / stconversion
puts "That is #{stone} stone"

I keep getting this error:

/home/ubuntu/workspace/lbs to stones.rb:4:in `<main>': undefined method `/' for "14\n":String (NoMethodError)

Answer 1

The command gets stands for "get a string". You are trying to divide a string by a number.

Change the line

lbs = gets.chomp

to

lbs = gets.chomp.to_i

to convert the string to an integer, or use to_f if you prefer using floats.

Answer 2

You cannot divide a string , you need to convert it to an int , ie:

stone = lbs.to_i / stconversion.to_i

Or convert a string to a float :

stone = lbs.to_f / stconversion.to_f

Answer 3

它在杀死利用lbs = gets.chomp.to_i时，你可以简单地利用lbs = gets.to_i这是处理它的正确方法。

puts "Enter a weight in lbs: " lbs = gets.to_i stconversion = 14 stone = lbs / stconversion puts "That is #{stone} stone"