title: Input/ Output alternatives for printf/scanf
body: <p>It may sound strange that knowing a lot about iOS and having some experience in .net, I am a newcomer to C. Somewhere I got this target to find average of n numbers without using <code>printf</code> and <code>scanf</code>. I don't want the code for the program but I am seeking alternatives to the mentioned functions.</p>
  <p>Is code with <code>printf/scanf</code> required here? Also do let me know if my query stands invalid.</p>