title: Check if variable values are close to each other
body: <p>Assume we've got two variables:</p>
  
  <pre><code>int test = 50;
  int test1 = 45;
  </code></pre>
  
  <p>Now I want to check if <code>test1</code> is near of <code>test</code> within -5/+5 inclusive. How can I do it?</p>