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Ruby Ruby Basics (Retired) Ruby Methods Method Returns: Part 2

Oliver Stamp
Oliver Stamp
3,464 Points
Posted by Oliver Stamp
Oliver Stamp
3,464 Points

Not quite sure whereI am going wrong, please help.

Method Returns on Ruby basics course, I cannot for the life of me work out where I am going wrong!

Question is:

Use string interpolation to return the remainder inside the sentence “The remainder of a divided by b is c.” where a is your “a” variable, b is your “b” variable, and c is the value of a % b.

and i get met with

"" Bummer! NameError: undefined local variable or method `a' for main:Object""

Please help!

def mod(a, b)
  return a % b
  puts "The remainder of #{a} divided by #{b} is #{c}:" 

end
mod (a%b)

1 Answer

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,858 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,858 Points

Hey Oliver,

You're more or less on the right track, but there a couple of issues.

  • First, you are using puts when the challenge specifically asks you to return the string.

  • Second, You are interpolating the variable c, but you haven't declared it anywhere. This code would work and pass the challenge if you changed return a % b to c = a % b. (And the puts to a return).

But an even DRYer approach would be to do the actual calculation right in the interpolation.

Below is the code I would use. Have a look, and I hope it makes sense.

def mod(a, b)
  return "The remainder of #{a} divided by #{b} is #{a % b}."
end

Keep Coding! :) :dizzy:

Oliver Stamp
Oliver Stamp
3,464 Points
Oliver Stamp
Oliver Stamp
3,464 Points

Thank you Jason. That makes total sense now, really appreciate the response!