Calling a method without a namespace
<p>I'm just browsing a C++ code and I noticed something. In a source file main.cpp</p>

<pre><code>std::cout &lt;&lt; converter();
</code></pre>

<p>Then I looked for the converter definition. There is no namespace and class name. Then I saw in tool.cpp</p>

<pre><code>using namespace Ccon::converter;
</code></pre>

<p>The definition is in the Ccon.cpp file.</p>

<p>Why the main.cpp can call <code>converter()</code>?</p>

<p>Please advise.</p>

<p>Thanks</p>
