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![tylerpostuma2](https://secure.gravatar.com/avatar/7819aa81879b227df0b53df6eabd5c81?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
tylerpostuma2
5,175 PointsWhy is C not defined?
When I take c = a % b I thought it should return the string, with everything in it with interpolation. Why is this not working! Please help!
def mod(a, b)
#write your code here
c = a % b
return "The remainder of #{a} divided by #{b} is #{c}"
end
mod(5 , 6)
3 Answers
![Seth Kroger](https://secure.gravatar.com/avatar/b5bdc43c1e576145fb404edba6fea5a6?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Seth Kroger
56,413 PointsYou're pretty much correct. The challenge is being picky about your grammar. You need to end the sentence with a period and it should pass.
![tylerpostuma2](https://secure.gravatar.com/avatar/7819aa81879b227df0b53df6eabd5c81?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
tylerpostuma2
5,175 PointsThank you both very much!
![Cindy Lea](https://secure.gravatar.com/avatar/8d36cc5aed706061021be7cbd92078c9?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Cindy Lea
Courses Plus Student 6,497 PointsDoes c need to be defined as a variable or constant?