span class="fl">0.5</span> * square(y);</span>
<span id="cb18-3"><a href="#cb18-3" aria-hidden="true" tabindex="-1"></a>}</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<p>A function can be declared and (perhaps separately) defined at most once. However, functions with different argument types are considered distinct even if they have the same name; see the <a href="#function-overloading">section on function overloading</a>.</p>


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