Question

I can print a raw number with this code:

puts 'Please enter your favorite number'
favNumber = gets.chomp
betterNumber  = favNumber.to_i 
puts betterNumber + 1 

but I need to set a message including the number. I changed the last two lines to this, but it’s wrong.

betterNumber  = favNumber.to_i + 1
puts 'Your favorite number sucks, a better number is '+ betterNumber + '!'

Help me.

Answer 1

betterNumber is of class Fixnum and your string is of course of class String. You can’t add a String and a Fixnum, you need to cast your Fixnum into a String using to_s.

"Your favorite number sucks, a better number is " + betterNumber.to_s + "!"

Also, using interpolation calls to_s on any objects being interpolated. So this works, too (and is more common):

"Your favorite number sucks, a better number is #{betterNumber}!"

Also, in Ruby we usually use snake_case variables as opposed to camelCase variables. So I recommend using better_number