title: What's the difference between Pointers and Global Variables in C?
body: <p>I'm reading <a href="http://publications.gbdirect.co.uk/c_book/" rel="noreferrer">The C Book</a> to try and get a better foundation in C.  While I think I'm generally  getting the concept of pointers, one thing sticks out to me is that it seems like it's generalizing whatever it's pointing to into a global variable (e.g. the ability to use pointers to return values from <code>void</code> functions), which naturally carries with it all the attendant dangers, I assume.</p>
  
  <p>Aside from the fact that a pointer references a specific variable or index in an array, what <b>is</b> the difference between a pointer and a global variable?</p>