We already created instances of the simple Circle
class. We just needed to use the new
keyword followed by the class name, specify the required arguments enclosed in parentheses, and assign the result to a variable.
The following lines declare a public CalculateArea
method within the body of the Circle
class:
public double CalculateArea() { return Math.PI * Math.Pow(this.radius, 2); }
The method doesn't require arguments to be called. It returns the result of the multiplication of π by the square of the radius field value (this.radius
). The following lines show a new version of the Main
method. These lines create two instances of the Circle
class: circle1
and circle2
. The lines then display the results of calling the CalculateArea
method for the two objects. The new lines are highlighted, as follows:
class Chapter01
{
public static void Main(string[] args)
{
var circle1 = new Circle(25f);
var circle2 = new Circle(50f);
Console.WriteLine(String...