Safe location of CodeIgniter in Wamp Server

[eluser]dudzartiaga[/eluser]
Thanks everyone your replies.

However, I do have a question in mind and here it is:

I heard that www folder in WAMP (C:\wamp\www) is a public folder. Files inside that www folder can be accessed by typing the location in URL bar just like accessing a normal page of your site. I am afraid if you put your CI files inside www, then those files can be access via URL and probably some hacker can alter my files for example a custom helper.

I am not very sure though, does CI knows how to protect itself from accessing via URL bar? Please advise.
If CI can protect itself? Is it 90% safe?

Thank you very much.