title: Integer constants
body: <p>If I declare a string constant like so:</p>
  
  <p>You should create a header file like</p>
  
  <pre><code>// Constants.h
  extern NSString * const MyFirstConstant;
  extern NSString * const MySecondConstant;
  //etc.
  </code></pre>
  
  <p>You can include this file in each file that uses the constants or in the pre-compiled header for the project.</p>
  
  <p>You define these constants in a .m file like</p>
  
  <pre><code>// Constants.m
  
  NSString * const MyFirstConstant = @"FirstConstant";
  NSString * const MySecondConstant = @"SecondConstant";
  </code></pre>
  
  <p>What do I do to define integer constants?</p>