Actually, if you look closely you'll notice that not other language lets you do this either (except through an 'eval' or similar). What I think you actually mean is that this still doesn't let you use closures. But in fact it does! :D You'll have to do a lot of void * casting to make it work though.
C does not provide closures. You can pass around a struct with a function pointer and a data or state pointer though. That will let you achieve the same thing, but it won't be as pretty.
