title: Comparing two files in C++
body: <p>I have a function that compares two files to see if they are the same. It reads the files byte by byte and checks to see they are the same.<br>
  The problem I'm having now is that for big files this function takes quite a long time. </p>
  
  <p>What is the better, faster way to check if files are the same?</p>