if I give a domian name

if I just register a domain name,

can I assign it to a subdomain

bellow is my site

http://ce.sharif.edu/~puramini/

and when I buy http://forexample.com

can I map the second one to the first without to need a web hosting

 

You can have a domain forwarded to another domain without having to purchase hosting.

 

You can buy the domain and set the dns to that host , then set the subdomain and trafer all the other files and folders to that new subdomain.

The way i would do it is

Set subdoamin up as Folder name it any think Folder2 then tranfer all files from the Folder1 to Folder2 then set your subdomain up then tranfer all files and folders from Folder2 to the new subdomain you create.


Hope you understand what i mean.

 

http://ce.sharif.edu/~puramini/

could I say my meaning right?
I alrealy have access to the bold part of the above host
I am a student in that university

I just would like to know

can I have http://mysite.com
but actually it reffers to /~puramini/ at my old hosting site
also I doubt can change any in the university site (http://ce.sharif.edu/)
I have just some files there (like a homepage)

but want it has a domain name

 

Yes, just use domain forwarding

 

when I register a domain name in any site,
now I intended namecheap.com

do they provide me domain forwarding?

where have I access to such options, is it a service of the place I buy the domain?

I am very newbie what happens if I buy a domain