title: Accessing to the argument of a declared function
body: <p>I have the following function declaration:</p>
  
  <pre><code>typedef void (cback) (scan_results *scan_result, uint8_t *adv_data);
  </code></pre>
  
  <p>I declare the function as follows:</p>
  
  <pre><code>cback my_cback;
  </code></pre>
  
  <p>I give <code>my_cback</code> to a function as an input. Then, I want to access the arguments of <code>my_cback</code>. How can I achieve this?</p>