IMPLEMENTATION MODULE Showcase15Lib;
(* Signatures match the definition exactly (strict 235). *)

IMPORT Conversions;

PROCEDURE InitPoint (VAR p : Point; x, y : INTEGER);
BEGIN
  p.x := x;
  p.y := y
END InitPoint;

PROCEDURE SumPoint (p : Point) : INTEGER;
BEGIN
  RETURN p.x + p.y
END SumPoint;

PROCEDURE AppendInt (VAR s : ARRAY OF CHAR; n : INTEGER);
  VAR tmp : ARRAY [0 .. 31] OF CHAR;
    i, k : CARDINAL;
BEGIN
  Conversions.IntToStr(n, tmp);
  (* find the end of s *)
  k := 0;
  WHILE (k <= HIGH(s)) AND (s[k] # CHR(0)) DO INC(k) END;
  i := 0;
  WHILE (k < HIGH(s)) AND (tmp[i] # CHR(0)) DO
    s[k] := tmp[i];
    INC(k); INC(i)
  END;
  IF k <= HIGH(s) THEN s[k] := CHR(0) END
END AppendInt;

END Showcase15Lib.