Write a class Bank with two methods simple$\_$interest and compound$\_$interest. The class has

three instance variables: principal, years, and rate $($in percentage$).$ Write a constructor that

initializes these three parameters. The methods return interest using the following formulae:

Simple Interest $=$ Principal $*$ Years $*($Rate$/100)$

Compound Interest $=$ Principal $*(1+($Rate$/100))$Years

Create an instance of the class and invoke both methods. Accept principal, years, and rate from

user.