title: Swift case statement
body: <p>I'm trying switch statements in Swift 3.0
  With my code, I get A, no matter what my variable is. 
  Why am I only getting A?</p>
  
  <pre><code>var grade = 45
  
  switch grade {
  
      case (grade ..&lt; 100):
          print("A")
      case (grade ..&lt; 90):
          print("B")
      case (grade ..&lt; 80):
          print("C")
      case (grade ..&lt; 70):
          print("D")
  
      default:
          print("F. You failed")
  }
  </code></pre>