title: Trigraph characters
body: <pre><code>c99 standard  5.2.1.1 Trigraph sequences
  </code></pre>
  
  <p>2 EXAMPLE The following source line</p>
  
  <pre><code>printf("Eh???/n");
  </code></pre>
  
  <p>becomes (after replacement of the trigraph sequence ??/)</p>
  
  <pre><code>printf("Eh?\n");
  </code></pre>
  
  <p>It's saying that it will replace the trigraph sequence, but it's not .</p>
  
  <p>It's printing <code>"Eh???/n"</code></p>
  
  <p>Am I missing something ?</p>