Hello World

#include <iostream>
int main()
{
   cout<<"Hello world.\n";
   return 0;
} 

You have no idea how long it took to get that to look nice. The part that caused the most problems was getting the '<' and '>'signs to display properly, thanks HTML. After that it was pretty straight forward, you just put the code in between either

<blockquote> ... </blockquote>
or
<code><pre> ... </pre></code>.

In case you were wondering, in order to display '<' you typed &_l_t_; (without the underscores). For some reason you can make '>' with the one on the keyboard, but you can also do &_g_t_; (once again without the underscores).