title: Get a char on the last line of a file in C
body: <p>Well, I wrote a program to make some steps and when it gets a final value print on a file, using 
      <code>fprinf(file, "No %d | Scr %d | Secs %d\n", number, score, seconds)</code>, but when I run again the program and it cleaned all the stuff that was printed and made the same prints on the file, as I am using the same beginning point.<br>
  Eg.:
  <pre><code>.
  .
  No 97 | Scr 712 | Secs 124
  No 98 | Scr 5040 | Secs 342
  No 99 | Scr 3621 | Secs 402
  No 100 | Scr 7803 | Secs 225
  </pre></code></p>
  
  <p>So how can I get get the <em>last number</em> and set if for the <em>beginning point</em> and do not print before values of it as I wanted ?</p>