title: error: warning: incompatible implicit declaration of built-in function ‘memcpy’ [enabled by default]
body: <p>I get this error.</p>
  
  <pre><code>error: warning: incompatible implicit declaration of built-in function ‘memcpy’ [enabled by default]
  </code></pre>
  
  <p>This is the code:</p>
  
  <pre><code>int arr[ 12] = {1,0,0,0,0,0,0,0,0,0,9370, 0};
  void *a = &amp;arr;
  memcpy(machine-&gt;mem, a,12*4);
  </code></pre>
  
  <p>What I am doing wrong?</p>