Introduction
I have used Visual Studio 2012 for debugging purpose. But you can use any version of visul studio as per your availability..
using System; using System.Collections.Generic; using System.Linq; using System.Text; public class csharpExercise { static void Main(string[] args) { int num, sum = 0, i, r; // Reading number Console.Write("Please enter a number: "); num = Convert.ToInt32(Console.ReadLine()); //Finding armstrong number or not for (i = num; i > 0; i = i / 10) { r = i % 10; sum = sum + r * r * r; } if (num == sum) { Console.WriteLine(num + " is an armstrong number."); } else { Console.WriteLine(num + " is not an armstrong number."); } Console.ReadLine(); } }