title: How does a program manage type information?
body: <p>I was just wondering, how is the type information managed internaly by a c++ program?</p>
  
  <p>eg. float f; needs 32bits of memory. But since all bits are used to save the value, how does the program remember it to be of the type float? </p>
  
  <p>(I know this is quite a noob question...)</p>