How To Check If Number Is Palindrome Or Not In C#

Introduction 

In this article, we will learn how to check whether a number is a palindrome or not using c#. we will find its reverse number and then compare if the reverse of a number if equal to its value (actual number) or not if reverse and numbers are the same then the given number will be a palindrome.

For example:

  • 121 & 121 (palindrome number)
  • 456 & 654 (not palindrome number)

C# code Example :

First of creating a new console application and put the below code in the program.cs file.

using System;


namespace PalindromeExamples
{
    class Program
    {
        static void Main(string[] args)
        {
            int EnteredNumber, tempNumber, remainder, reverseNumber = 0;

            Console.WriteLine("\n");
            Console.Write("Enter a any number : ");
            EnteredNumber = int.Parse(Console.ReadLine());
            Console.WriteLine("\n");
            tempNumber = EnteredNumber;
            //reverse num stored in reverseNumber variable
            while (EnteredNumber > 0)
            {
                remainder = EnteredNumber % 10;
                reverseNumber = reverseNumber * 10 + remainder;
                EnteredNumber /= 10;
            }
            Console.WriteLine("Reverse number is a : {0}", reverseNumber);
            Console.WriteLine("\n");
           //Now check entered num and reverse num 
            if (tempNumber == reverseNumber)
            {
                Console.WriteLine("This is a palindrome Number");
            }
            else
            {
                Console.WriteLine("This is not a palindrome  Number");
            }     
            Console.ReadLine();
        }
    }   
}

Then, run your console application.

Output :

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