How to make a mode dependent operation ?

[Fren Zeee]

Here is a simple newbie problem :

In c-mode, I want to insert a skeleton of function as


 () {



}


and In lisp-mode, I want

( defun ()
""


)


and similarly in scheme, java, python, haskell, pascal ...


What is the quick but maybe not the dirty way to do it ?


What is the PRO way to do it ? I have heard a little about the hooking
hooks :)


What is a hook and what is proper place of use ? Is it appropriate for
this kind of private customization ?


Franz