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  37 <h1>Standard I/O<a class="headerlink" href="#standard-i-o" title="Permalink to this headline">¶</a></h1>
  38 <p>Freedom Metal integrates with libc <code class="docutils literal notranslate"><span class="pre">STDOUT</span></code> to provide virtual terminal support.
  39 The default <code class="docutils literal notranslate"><span class="pre">STDOUT</span></code> device is the first UART serial peripheral on the target.
  40 If no UART serial peripheral is present, such as in the case of SiFive CoreIP
  41 test harnesses, then the bytes sent to <code class="docutils literal notranslate"><span class="pre">STDOUT</span></code> are dropped.</p>
  42 <div class="section" id="hello-world">
  43 <h2>Hello World<a class="headerlink" href="#hello-world" title="Permalink to this headline">¶</a></h2>
  44 <p>Using the virtual terminal with Freedom Metal is exactly what you might expect:</p>
  45 <div class="highlight-C notranslate"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre>1
  46 2
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  51 7</pre></div></td><td class="code"><div class="highlight"><pre><span></span><span class="cp">#include</span> <span class="cpf">&lt;stdio.h&gt;</span><span class="cp"></span>
  52
  53 <span class="kt">int</span> <span class="nf">main</span><span class="p">(</span><span class="kt">void</span><span class="p">)</span> <span class="p">{</span>
  54    <span class="n">printf</span><span class="p">(</span><span class="s">&quot;Hello, world!&quot;</span><span class="p">);</span>
  55
  56    <span class="k">return</span> <span class="mi">0</span><span class="p">;</span>
  57 <span class="p">}</span>
  58 </pre></div>
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