/* C# Programming Tips & Techniques by Charles Wright, Kris Jamsa Publisher: Osborne/McGraw-Hill (December 28, 2001) ISBN: 0072193794 */ namespace nsArea { using System; public class Area { static public void Main () { double Area; int Radius = 42; GetArea (Radius, out Area); Console.WriteLine ("The area of a circle with radius {0} is {1}", Radius, Area); } static void GetArea (int radius, out double area) { const double pi = 3.14159; area = pi * radius * radius; } } }