title: How to calculate size of a struct in C?
body: <p>I have the following Structs</p>
  
  <pre><code>struct node{
      int value;
      struct node *next;
      struct node *prev;
  };
  </code></pre>
  
  <p>And I think that the size must be greater than sizeof(integer).</p>
  
  <p>But it's confusing how to calculate the whole size of this struct.</p>
  
  <p>So how to caculate the size?</p>
  
  <p>I mean I want to calculate it manually by hand, not by computer...</p>