why is my controller 'select-db.php' don't show up?

[eluser]anna16[/eluser]
Hello guys

I typed this,
http://mysite.com/ci/index.php/select-db/

but my controller don't display anything instead it shows an error message.

But when i typed this,
http://mysite.com/ci/index.php/welcome/

It display the default welcome message.

why it this?

thanks in advance.

[eluser]mi6crazyheart[/eluser]
In this url "http://mysite.com/ci/index.php/welcome/" , welcome is a controller. If u type this... "http://mysite.com/ci/index.php/select-db/" u should have a controller by name "select-db". So, have u created any controller by this name... ?

More info about CI controller : http://ellislab.com/codeigniter/user-gui...llers.html