Kata

Write a function that finds the sum of all its arguments.

eg:

sum(1, 2, 3) // => 6
sum(8, 2) // => 10
sum(1, 2, 3, 4, 5) // => 15

sum(1, 2, 3) // => 6
sum(8, 2) // => 10
sum(1, 2, 3, 4, 5) // => 15

sum_args(1, 2, 3) # => 6
sum_args(8, 2) # => 10
sum_args(1, 2, 3, 4, 5) # => 15

sum 1, 2, 3 # => 6
sum 8, 2 # => 10
sum 1, 2, 3, 4, 5 # => 15

sum 1, 2, 3 # => 6
sum 8, 2 # => 10
sum 1, 2, 3, 4, 5 # => 15

(sum 1 2 3) ; => 6
(sum 8 2) ; => 10
(sum 1 2 3 4 5) ; => 15

sum(3, 10, 20, 3); // --> 33
sum(2, 10, 15); // --> 25
sum(1, 10); // --> 10
sum(0); // --> 0

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TIPS:

ruby/python : http://lmgtfy.com/?q=Ruby+splat+operator

JS/Coffeescript : http://lmgtfy.com/?q=Javascript+arguments+variable

C: https://www.geeksforgeeks.org/variadic-functions-in-c/