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Basic Ruby gets.chomp
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Basic Ruby gets.chomp
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I'm new to programming and I'm trying to answer this basic question.
Write a program which asks for a person's favorite number. Have your program add one to the number, then suggest the result as a bigger and better favorite number.
This is what I have to far, but it won't convert to a number.
puts "What is your favorite number?"
number = gets.chomp
number = number.to_i + 1
puts "I suggest " + number + " as a bigger and better number"
Look more closely at the error you get:
What is your favorite number?
42
number.rb:4:in `+': can't convert Fixnum into String (TypeError)
from number.rb:4:in `<main>'
Line 4 is:
puts "I suggest " + number + " as a bigger and better number"
The problem is that Ruby won't implicitly convert number into a string (e.g. "foo" + 42 is not valid in Ruby). There are a couple of solutions:
Call
to_sonnumberto convert it to a string before concatenating:puts "I suggest " + number.to_s + " as a bigger and better number"Use Ruby string interpolation:
puts "I suggest #{number} as a bigger and better number"
Option 2 is more idiomatic, I suggest using that.
Tags
ruby
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