Campaign Letter:

A local politician wants to generate personalized campaign letters.
Steps:
  1. Get the voter's first name and party affiliation
  2. Print the letter.
Functions:
  1. get_voter_data
  2. do_campaign_letter
What are the parameters?
Which are value and which are reference?
main   get_voter_data
  <-- f_name
  <-- party

main   do_campaign_letter
  --> f_name
  --> party
Structure Chart:
               main

f_name, party    f_name, party

  get_temp             print_activity