C# program to check Armstrong Number

 using System;  
 using System.Collections.Generic;  
 using System.Linq;  
 using System.Text;  
 using System.Threading.Tasks;  
 namespace sorting  
 {  
   class Armstrong  
   {  
     public static void Main(string[] args)  
     {  
       int n, r, sum = 0, temp;  
       Console.Write("Enter the Number= ");  
       n = int.Parse(Console.ReadLine());  
       temp = n;  
       while (n > 0)  
       {  
         r = n % 10;  
         sum = sum + (r * r * r);  
         n = n / 10;  
       }  
       if (temp == sum)  
         Console.Write("Armstrong Number.");  
       else  
         Console.Write("Not Armstrong Number.");  
       Console.ReadLine();  
     }  
   }  
 }