procedure TForm1.Button1Click(Sender: TObject);
var
i : Integer;
s : Integer;
begin
s := 0;
for i := 1 to 100 do
s := s + i;
ShowMessage(IntToStr(s));
end;
procedure TForm1.Button2Click(Sender: TObject);
var
i : char;
s : String;
begin
s := '';
for i := 'A' to 'Z' do
s := s + i;
ShowMessage(s);
end;
procedure TForm1.Button3Click(Sender: TObject);
var
A : WeekType;
begin
for A := Mon to Sun do
ShowMessage(IntToStr(ord(A)));
end;