Write a program segment to ensure that a user enters the year of his or her birth with exactly 4 digits. Suppose that a string variable, Name, has been declared as an array of characters and has been...

Write a program segment to ensure that a user enters the year of his or her birth with exactly 4 digits.

Suppose that a string variable, Name, has been declared as an array of characters and has been assigned a value. Write a program segment that displays the first and last characters of Name.