I used drop down menu to select "Code" which gives "<code class="CodeInline"> <code class="CodeInline"></code> </code>
The syntax that you suggest isn't documented anywhere (at least I couldn't find it). There is a documentation link that says "You can use Simple Html in your post, but that doc says nothing about code.
So as I said: it would be very nice if sharing the code was easier and more obvious. Markdown is now ubiquitously used and very simple format.