program caos;

{$n+}       { you need to activate hardware floating-point calculation 
              in order to use the extended type }

uses
   crt;

var
   s : single;    { 32-bit real }
   r : real;      { 48-bit real }
   d : double;    { 64-bit real }
   e : extended;  { 80-bit real }

   i : integer;  

begin
   clrscr;

   s := 0.5;
   r := 0.5;
   d := 0.5;
   e := 0.5;

   for i := 1 to 100 do begin
      s := 3.8 * s * (1 - s);
      r := 3.8 * r * (1 - r);
      d := 3.8 * d * (1 - d);
      e := 3.8 * e * (1 - e);

      if (i/10 = int(i/10)) then begin
         writeln (i:10, s:16:5, r:16:5, d:16:5, e:16:5);
      end;
   end;

   readln;
end.