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Ruby Ruby Basics (Retired) Ruby Methods Method Returns: Part 1

FRANCIS F V ROBERTO
FRANCIS F V ROBERTO
3,348 Points
Posted by FRANCIS F V ROBERTO
FRANCIS F V ROBERTO
3,348 Points

# I'm having an error here.why is it so? def add(a, b) puts a + b end add(1, 2)

it tells me to create a method that calls two arguments and returns the sum of the two arguments/numbers. I think there's nothing wrong with my code.

method.rb 
def add(a, b)
  puts a + b
end

add(1, 2)
Sidharta Surya Kusnanto
Sidharta Surya Kusnanto
1,174 Points
Sidharta Surya Kusnanto
Sidharta Surya Kusnanto
1,174 Points

You don't need to put in "puts" there. Ruby will automatically return the last line of the method, so if you use #puts there, #add will return nil, because #puts returns nil. Just having "a + b" inside your method will fix it, because then it will return the result of a + b. :)

2 Answers

Sue Dough
Sue Dough
35,800 Points
Sue Dough
Sue Dough
35,800 Points

You are not returning anything in your function. You should return like this instead of using puts.

def add(a, b)
  return a + b
end

add(2, 3)
Tim Knight
Tim Knight
28,888 Points
Tim Knight
Tim Knight
28,888 Points

Ruby explicitly returns the last value provided in a method. You don't need to specifically tell it to return. It's actually the Ruby idiom to not write it that way, but instead do:

def add(a, b)
  a + b
end

add(2, 3)