Circle class with overloaded constructors - CSharp Custom Type

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Description

Circle class with overloaded constructors

Demo Code

using System;//from  w ww.ja  v  a 2 s.co m
public class Circle
{
   public int x;
   public int y;
   public int radius;
   private const float PI = 3.14159F;
   public double area()
   {
      double theArea;
      theArea = PI * radius * radius;
      return theArea;
   }
   public double circumference()
   {
      double Circ;
      Circ = 2 * PI * radius;
      return Circ;
   }
   public Circle()
   {
      x = 0;
      y = 0;
      radius = 0;
   }
   public Circle( int r )
   {
      x = 0;
      y = 0;
      radius = r;
   }
   public Circle ( int new_x, int new_y )
   {
      x = new_x;
      y = new_y;
      radius = 0;
   }
   public Circle ( int new_x, int new_y, int r )
   {
      x = new_x;
      y = new_y;
      radius = r;
   }
   public void print_circle_info()
   {
      Console.WriteLine("Circle: Center = ({0},{1})", x, y);
      Console.WriteLine("        Radius = {0}", radius);
      Console.WriteLine("        Area   = {0}", area());
      Console.WriteLine("        Circum = {0}", circumference());
   }
}
class MainClass
{
   public static void Main()
   {
      Circle first  = new Circle();
      Circle second = new Circle(4);
      Circle third  = new Circle(3,4);
      Circle fourth  = new Circle(1, 2, 5);
      Console.WriteLine("\nFirst Circle:");
      first.print_circle_info();
      Console.WriteLine("\nSecond Circle:");
      second.print_circle_info();
      Console.WriteLine("\nThird Circle:");
      third.print_circle_info();
      Console.WriteLine("\nFourth Circle:");
      fourth.print_circle_info();
   }
}

Result


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