title: Is this possible? [pointer to char array C]
body: <p>Is this possible?</p>
  
  <pre><code>size_t calculate(char *s)
  {
      // I would like to return 64
  }
  
  int main()
  {
      char s[64];
  
      printf("%d", calculate(s));
  
      return 0;
  }
  </code></pre>
  
  <p>I want to write a function which calculates the size of the char array declared in <code>main()</code>.</p>