cqfn/eo

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+alias org.eolang.io.stdout
+alias org.eolang.txt.sprintf
+package sandbox

[dx dy] > vector
  pow. > length
    add.
      dx.pow 2.0
      dy.pow 2.0
    0.5

[x y] > point
  [to] > distance
    length. > @
      vector
        to.x.sub (^.x)
        to.y.sub (^.y)

[center radius] > circle
  center > @
  [p] > is-inside
    leq. > @
      ^.distance p
      ^.radius

[args] > app
  stdout > @
    sprintf
      "%s\n"
      is-inside.
        circle
          point 1.0 1.0
          2.0
        point 1.0 1.0