很不好意思，我直接将帮助中的examples粘上来：
function Sum( var X: arrayof Double): Double;
var
I: Word;
S: Real;
begin
S := 0; { Note that open array index range is always zero-based. }
for I := 0 to High(X) do S := S + X;
Sum := S;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
List1: array[0..3] of Double;
List2: array[5..17] of Double;
X: Word;
S, TempStr: string;
begin
for X := Low(List1) to High(List1) do
List1[X] := X * 3.4;
for X := Low(List2) to High(List2) do
List2[X] := X * 0.0123;
Str(Sum(List1):4:2, S);
S := 'Sum of List1: ' + S + #13#10;
S := S + 'Sum of List2: ';
Str(Sum(List2):4:2, TempStr);
S := S + TempStr;
MessageDlg(S, mtInformation, [mbOk], 0);
end;
