<blockquote>
<p><a href="https://github.com/elextr" class="user-mention">@elextr</a> just want to mention that usually no one use such prototypes, usually parameters names present in prototypes;</p>
</blockquote>

<p>In C++ it's common to leave a parameter name out even in the function definition, as <a href="https://github.com/elextr" class="user-mention">@elextr</a> to avoid "unused parameter" warnings (e.g. when overriding a method, or writing a callback function or some other things with a forced signature).</p>

<p>In C it's a little less common to see prototypes without parameter names, but it isn't rare either, some people use this style in all headers.</p>

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