Laramie park District has files of particpants in its summer and winter program this year. each file is in participant ID number order and contains additional fields for first name, last name age, and class taken ( for example, Begining Swimming).

a. Design the logic for a program that merges the file for summer and winter programs to create a list of all participants for the year in ID number order.

b. Modify the program so that if a participant has more than one record, the participant ID number and name are output only once.

c. Modify the program so that if participant has more than one record, ID number of classes the participant has taken.