title: How to input 8 byte hexadecimal number into char array?
body: <p>I want to generate sequence of hexadecimal numbers starting with <code>07060504003020100</code>.
  Next number would be <code>0f0e0d0c0b0a0908</code> etc in that order.</p>
  
  <p>When I use <code>unsigned long long int</code> and output the data the first 4 bits, meaning that <code>0</code> is truncated. and it prints <code>706050403020100</code>.</p>
  
  <p>So I was thinking of putting the number into a <code>char</code> array buffer(or some other buffer) and then print the output so that later if I want to compare I can do character/byte wise compare.</p>
  
  <p>Can anybody help me out? <code>char[8]="0x0706050403020100"</code> doesn't look right.</p>