a) Create a Birthday Reminder program that keeps track of birthdays for all of your friends. You must allow the user the ability to add data for a new friend or modify the data for an existing friend. Additional Requirements: 1) Create a struct for Date that stores entries for month, day, and year. 2) Create a struct for Friend that stores entries for firstName, nickname, and birthdate (type Date created in #1) 3) Your program should have the ability to add or modify the data for twenty friends. (Hint: Create an array of friends) 4) Your program should have the ability to print out the data for all of the current friends.