title: How to copy memory
body: <p>Say i have:</p>
  
  <pre><code>unsigned char *varA, *varB, *varC;
  varA=malloc(64);
  varB=malloc(32);
  varC=malloc(32);
  </code></pre>
  
  <p>How can i put the <strong>first</strong> 32 byte of varA into varB and the <strong>last</strong> 32 byte of varA into varC?</p>