What kind of information is stored in a .cpp file extension? : <p>I researched this question on Google and Stak Overflow but couldn't find an answer to it. </p>

<p>I am trying to find out what all information is stored in a .cpp file extension. Meaning, is it just code that has been compiled (meaning compiled code)? Does have an object file in it? Does it include an object in it? What exactly does it consist of?</p>
