Write a program that asks the user to enter a person's age. The program should display a message indicating whether the person is an infant, a child, a teenage or an adult. following are the guidelines:

*If the person is 1 year old or less, he or she is an infant.

*If the person is old than 1 year, but younger than 13 years, he or she is a child.

*If the person is at least 13 years old, but less than 20 years old, he or she is a teenager .

*If the person is at least 20 years old, he or she is an adult.