title: Count characters starting at zero?
body: <p>I need to write a for-each loop that lists each character in
  <code>mystery_string</code> with its index. Example below: </p>
  
  <p><code>mystery_string= "Olivia,"</code> output would be: </p>
  
  <pre><code>0 O
  1 l
  2 i
  3 v
  4 i
  5 a
  </code></pre>
  
  <p>I cannot use the range function on this problem.<br>
  This is my code, but the number starts at 1. What am I doing wrong?</p>
  
  <pre><code>mystery_string = "CS1301"
  count = 0 
  for current_letter in mystery_string:
      count = count + 1
      print (count , current_letter)
  </code></pre>
  
  <p>I have been getting this as output: </p>
  
  <pre><code>1 C
  2 S
  3 1
  4 3
  5 0
  6 1
  </code></pre>
  
  <p>but it needs to start at zero.</p>