Sub-Domains | Is there a Way to Do This Online

[parastar]

Hey Guys,
Well I know making sub-Domains is possible and Its pretty easy as well.
Well what I wanted to know is Can one make Sub-Domains Online?
Well,What I mean to say Is,can a person make sub-Domains via a Website Rather than a Control panel.

I mean Is there a way where we can actually make direct changes to the /htdocs directory via The url(Example.com).

For Example:
I want to make a sub-domain to Example.com
The sub-Domain is 123.Example.com
and I want to do this through Example.com and not the control Panel.

I know this is a tricky subject but any leads would Help.

It there a way to do this is C/C++ or another Language?
Thanks!

[sean]

I believe that's all handled by your host's DNS servers - so unless you host yourself (and if you use a Control Panel, I'm guessing you don't) it's up to your host how they let you do this. And I wouldn't use C/C++ for this - if you were connecting remotely to a DNS server, you'd probably use OpenSSH or something. (I'm by no means an expert - these are just my "best guesses")