3. Create three new functions that: a. Checks whether or not an input character is upper or lower case. Print the result to console. Hint: ASCII table. b. Checks whether or not an input character is a vowel or consonant. Print the result to console. Hint: constant arrays. c. Checks whether an input integer representing a year is a leap year. Print the result to console. Hint: https://www.timeanddate.com/date/leap year.html