Exercise

# Euclidean distance from 0

For your second function, you will compute the distance from 0 to a point in a 2D space.

Unless otherwise noted, assume that `Rcpp`

is loaded in your workspace.

Instructions

**100 XP**

Write a C++ function `euclidean_distance()`

that takes two arguments `x`

and `y`

(both `double`

) and returns another `double`

that is the euclidian distance between `(0, 0)`

and `(x, y)`

points.