title: bool versus BOOL
body: <blockquote>
    <p><strong>Possible Duplicates:</strong><br>
    <a href="https://stackoverflow.com/questions/541289/objective-c-bool-vs-bool">Objective-C : BOOL vs bool</a><br>
    <a href="https://stackoverflow.com/questions/3016846/is-there-any-difference-between-bool-and-boolean-in-objective-c">Is there any difference between BOOL and Boolean in Objective-C?</a>  </p>
  </blockquote>
  
  
  
  <p>I noticed from the autocomplete in XCode that there is a bool and a BOOL in Objective-C. Are these different? Why are there two different kinds of bool?</p>
  
  <p>Are they interchangeable?</p>