zsyn-symbol">c</span> <span class="mdzsyn-number">100</span>))</code></pre><p>Bindings created with <code class="mendoza-code">def</code> have lexical scoping. Additionally, bindings
created with <code class="mendoza-code">def</code> are immutable; they cannot be changed after definition.
For mutable bindings, like variables in other programming languages, use the
<code class="mendoza-code">var</code> keyword. The assignment special form <code class="mendoza-code">set</code> can then be used to
update a var