Problem with Codes

You say that there's no output yet. But CI (or php) must give you at least one or more error messages.
Solve these errors one by one.
If there are no errors any more, and you still get a blank page, I'm willing to help you further. No offence now, but your current approach is one where I'm building the web application for you, and that's not what I want. And it won't help you learn CodeIgniter.
Please, invest a few days in studying the documentation website. CI is not that difficult, but it's not a good idea to skip that and just start asking other people to help you.

Thank you very much Sir No error showed up. This is the only part of my program that is not working some time if I put the code like that it will tell me the host can not find this even my application that is working will not work at all 

 I have passed the stage that it gives out a 404 error I don't know what else to do  if you have a better documentation on codeigniter you can share with me please send it as a link it will be very helpful. 

Thanks and God Bless
Jay