title: Changing to uppercase letters using ASCII
body: <p>I have to create a function that changes lower case letters to upper case letters using only the ord and chr functions. </p>
  
  <p>This is what I have so far, but the problem is it is not returning all the letters, only the first letter.</p>
  
  <pre><code>def changeToUpperCase(text):
  
  for i in text:
      i = ord(i) - 32
      text = chr(i)
  
  
      return text
  
  def main():
  
  text = input("Please type a random sentence.")
  
  
  
  text = changeToUpperCase(text)
  print("Step 2 -&gt; ", text)
  </code></pre>