what does x-- or x++ do here?
<p>it is a silly Q for most of u - i know - but i one of the beginner here, and I can not understand why the output in here are  12 what does this (<code>x--</code>) do to the result ? </p>

<pre><code>int x, y;
x = 7;
x-- ;
y = x * 2;
x = 3;
</code></pre>
