/*
 * C# Program to Get a Number and Display the Number with its Reverse
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Program
{
class Program
{
    static void Main(string[] args)
    {
        int num, reverse = 0;
        Console.WriteLine("Enter a Number : ");
        num = int.Parse(Console.ReadLine());
        while (num != 0)
            {
                reverse = reverse * 10;
                reverse = reverse + num % 10;
                num = num / 10;
            }
        Console.WriteLine("Reverse of Entered Number is : "+reverse);
        Console.ReadLine();
    }
}
}

Enter a Number : 123
Reverse of Entered Number : 321