Use variables instead of constants.

Author: Gloritz

pangram/pangram.rb

@@ -3,15 +3,15 @@
 user_input = gets.chomp
 # The quick brown fox jumps over the lazy dog.
 
-ABC = ('a'..'z').to_a
+abc = ('a'..'z').to_a
 new_user_input = user_input.downcase.split(//)
 
-selection = new_user_input.select {|element| ABC.include?(element)}
+selection = new_user_input.select {|element| abc.include?(element)}
 
-a = (ABC - selection).empty?
+a = (abc - selection).empty?
 
 if a == true
   puts "Yes, I am a pangram!"
 else
   puts "Sorry, you are wrong, I am not a pangram :("
-end   
+end