emacs problem

[Song Lining]

Hi, everyone,

I've been trying to use emacs to edit my C++ code, and I've used M-x
auto-fill-mode to turn on the autofill mode, when I want to insert some
comment like /*asdfkj*/, it seemed not work at all, what's the problem?
Could anyone tell me the exact actions I shall take?

Thanks!
Song Lining