This is a simple C# program to check whether entered number is Armstrong number or not. If you are a c# beginner or want to start learning the c# programming language, then this program will help you to understand the basics of c# programming. In this program, I will explain how to write a C# program to check Armstrong number.

Armstrong Number Program in c#

Copy the below c# program and execute it in your Microsoft Visual Studio IDE (Integrated Development Environment ). At the end of this program, I have shared the output of program this program.

using System;

  public class ArmstrongProgram  
   {  
     public static void Main(string[] args)  
      {  
       int  n,r,sum=0,temp; 

       Console.Write("Enter any number to check armstrong 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("This number is a Armstrong Number."); 
        } 
        else {
            Console.Write("This number is not Armstrong Number.");
        }

      }  
  }

Enter any number to check armstrong number: 153
This number is a Armstrong Number.

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