title: fscanf / fscanf_s difference in behaviour
body: <p>I'm puzzled by the following difference in behaviour:</p>
  
  <pre><code>// suppose myfile.txt contains a single line with the single character 's'
      errno_t res;
      FILE* fp;
      char cmd[81];
  
      res = fopen_s(&amp;fp, "D:\\myfile.txt", "rb" );
      fscanf(fp,"%80s",cmd); // cmd now contains 's/0'
      fclose(fp);
  
      res = fopen_s(&amp;fp, "D:\\myfile.txt", "rb" );
      fscanf_s(fp,"%80s",cmd); // cmd now contains '/0' !
      fclose(fp);
  </code></pre>
  
  <p>The results do not depend in the order of call (i.e., call fscanf_s first, you'd get the empty string first). Compiled on VC++ - VS2005. Can anyone reproduce? Can anyone explain?</p>
  
  <p>Thanks!</p>