title: How can I access structure fields by name at run time?
body: <p>The C faqs explain it in a way, <a href="http://c-faq.com/struct/fieldnames.html" rel="noreferrer">here is the link.</a></p>
  
  <p>But I can't understand it, Somebody can explain it for me? Or give me another way?</p>
  
  <p>Thanks so much!</p>