node count(c : int; r : bool) returns (res : int)
let
  res = c fby (if r then 0 else res + c);
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node fourth() returns (res : bool)
var tmp : int;
let
  tmp = 0 fby (if res then tmp + 1 else 0);
  res = tmp = 0;
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node foo() returns (res : int)
let
  res = 0 fby (3 + res);
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(* Unary operators *)
node main() returns (c : int)
let
  c = count(foo(), fourth());
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