title: how to write content of an array to hard disk
body: <p>i am trying to write content of a very large char array to the hard disk.
  I have the following array(actually the size of it is going to be very large)
  I am using the array as a bit array and after inserting a specified number of bits into it I have to copy its content to another array and write this copy into hard disk. I then empty the content of the array by assigning it 0 for further use. </p>
  
  <pre><code>unsigned char       bit_table_[ROWS][COLUMNS];
  </code></pre>