Small character or image to represent code?

Now I want to put something in a logo which can represent that we do coding or at least signifies coding or something that's related to code

like

{ P = () * etc


What's the smallest character or symbol (max 3 characters) or anything else which can signify code? I don't have space for an image, I can hold only 1-3 characters

(..)


{ }

• Programmers.se's logo works great too: /* Programmers */ Although comment block expresses more about commentary and the subjective side of coding (which probably is the intent in that case). – Jari Keinänen Jul 18 '11 at 9:20
</> is most common I think since it represents HTML and some markup languages.
I believe you mean coding as programming. So therefore I can imagine something like f() or a[0] would be quite nice in relation to modern programming languages. Other ideas, but containing slightly more characters: int *ptr;, void *.