title: How do I write a program to ask user for 2 cities then return the distance between them
body: <pre><code>       Belfast   Dublin   Cork  Galway                      
  Belfast 0        104    266     230                     
  Dublin  104      0      161     129                     
  Cork    266      161    0       123                     
  Galway  230      129    123     0                       
  </code></pre>
  
  <blockquote>
    <p>Declare a 2D array that holds these distances  </p>
    
    <p>Declare a list to hold the 4 city names in the same order as table above                                       </p>
    
    <p>Write a program to ask user for 2 cities then return the distance between them                                     </p>
    
    <p>Write a program to convert the 2D array to KM.  Iterate over the entire 2D array and multiply each value by 1.61                                       </p>
  </blockquote>
  
  <p>So far I have done following:</p>
  
  <pre><code>distances = ((0, 104, 266, 230),(104, 0, 161, 129),(266, 161, 0, 123),(230, 129, 123, 0)) 
  cities = ((Belfast), (Dublin), (Cork), (Galway)) 
  </code></pre>