title: Difference between lc and c / ls and s in printf
body: <p>What's the difference between lc (C) and c / ls (S) and s in <code>printf()</code> function? Why does ls (S) conversion return -1?</p>
  
  <p>Exemple :</p>
  
  <pre><code>printf("%C", 'ͳʹ); // -1
  printf("%c", 'ͳʹ); // PRINT
  printf("%S", "ͳ ans T"); // -1
  printf("%s", "ͳ and T"); // PRINT
  </code></pre>
  
  <p>On mac..</p>