Q8: Design and implement in C# a class named Circle that has the following:

Fields:

- radius: a double

- PI : a const double initialized with the value 3.14159

Constructors:

- A one-argument constructor that accepts a radius of the circle as an argument.

- A no-argument constructor that sets the radius field to 0.0.

Properties:

-Radius

-both set and

get where set should ensure that a negative value will not be stored by assigning a 0 (do not print out an error message as that should be done in the program that uses Circle)

Methods:

- GetArea: returns the area for the circle, which is calculated as area = PI x radius²

- GetCircumference: returns the circumference of the circle, which is calculated as: circumference = 2 x PI x Radius

The basic structure of your Circle class might look something like:

public class Circle

{

private double radius

private const double PI = 3.14159;

// No argument constructor

public Circle()

{

//insert code here

}

//GetArea

public double GetArea()

{

//insert code here

}

//GetCircumference

public double GetCircumference()

{

//insert code here

}

}

Once you have written the Circle class, write a driver program (i.e. a class in another file that has a Main() method) that demostrates the working of the circle class by creating several Circle objects, asking the user for the raduis (and validating that is is positive), and then printing the circles' area and circumference. Use a loop to allow the program to test several different values so you can demonstrate that the program works for a range of input. Be sure you show that both constructors work.

NOTE: On this assignment you can assume the correct datatype: that is, if the program requests a double, you can assume that the user will input a double, etc . You need to validate that the data entered is in the correct range.