IF THEN ELSE

Another basic example of IF THEN ELSE.

procedure TForm1.btnCheckClick(Sender: TObject);
var age : Integer;
begin
  age := StrToInt(edtAge.Text);

  if (age>=18) then
    ShowMessage('Congratulations! You are old enough to vote!')
  else
    ShowMessage('Sorry, you are not old enough to vote yet...');
end;