pascal_triangle.pas

procedure Pascal(r : Integer);
var
   i, c, k : Integer;
begin
   for i:=0 to r-1 do begin
      c:=1;
      for k:=0 to i do begin
         Print(Format('%4d', [c]));
         c:=(c*(i-k)) div (k+1);
      end;
      PrintLn('');
   end;
end;

Pascal(9);