[R] Simple question, name of the variable as string.

[C.H.]

Dear R users,

I have a very simple question and I've tried to search for the answer.
(But failed.)

there should be a function (func) that work like

> abc <- c(1,2,3,4)
> func(abc)
"abc"

I would like to know the name of that function. Thank you very much
for your help.

Regards,

CH

-- 
CH Chan