Do one of the following programming problems:
Odd Characters
  Write a function called get_odd_characters(a_string),
  which takes a string as a parameter.  Your function should return a
  string, which is the characters from a_string with only
  characters from odd indices included.
Count Character
Write the function count_character(text, character).  The function should return the number of times that the string of length 1, character, occurs in the string of abitrary length, text.