welcome

失的猛

 

1. /*
   
2.  * Created by SharpDevelop.
   
3.  * User: Soledad
   
4.  * Date: 2011/7/6
   
5.  * Time: 11:30
   
6.  *
   
7.  * To change this template use Tools | Options | Coding | Edit Standard Headers.
   
8.  */
   
9. using System;
   
10. 
    
11. namespace Welcome
    
12. {
    
13.     class Program
    
14.     {
    
15.         public static void Main(string[] args)
    
16.         {
    
17.              
    
18.             double r = Convert.ToDouble(Console.Read());
    
19.             
    
20.             Console.WriteLine("The diameter is {0}.",2*r);
    
21.             Console.WriteLine("The circumference is {0}.",2*Math.PI*r);
    
22.             Console.WriteLine("The area is {0}.",Math.PI*r*r);
    
23.             
    
24.             Console.Write("Press any key to continue . . . ");
    
25.             Console.ReadKey(true);
    
26.         }
    
27.     }
    
28. }