Armstrong Number Program in C#

An Armstrong number (also known as a narcissistic number) is a number that is equal to the sum of its own digits each raised to the power of the number of digits. For example, 153 is an Armstrong number because $1^3 + 5^3 + 3^3 = 153$

Here's a simple C# program to check if a number is an Armstrong number:

 using System;  
 class Program  
 {  
   static void Main()  
   {  
     Console.WriteLine("Enter a number:");  
     int number = Convert.ToInt32(Console.ReadLine());  
     if (IsArmstrong(number))  
     {  
       Console.WriteLine($"{number} is an Armstrong number.");  
     }  
     else  
     {  
       Console.WriteLine($"{number} is not an Armstrong number.");  
     }  
   }  
   static bool IsArmstrong(int number)  
   {  
     int originalNumber = number;  
     int sum = 0;  
     int digits = number.ToString().Length;  
     while (number > 0)  
     {  
       int digit = number % 10;  
       sum += (int)Math.Pow(digit, digits);  
       number /= 10;  
     }  
     return sum == originalNumber;  
   }  
 }  

How It Works:

1. The user is prompted to enter a number.
2. The IsArmstrong method calculates the number of digits in the number and then computes the sum of each digit raised to the power of the total number of digits.
3. Finally, it compares the calculated sum to the original number to determine if it's an Armstrong number.

Running the Program:

1. Copy the code into a C# development environment or online compiler.
2. Compile and run the program.
3. Enter a number when prompted to check if it is an Armstrong number.

Thanks