isOdd

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp4
{
    class Program
    {
        static void Main(string[] args)
        {
            int inputOdd = int.Parse(Console.ReadLine());

            bool isOdd = inputOdd % 2 != 0;

            while (true)
            {
                if (inputOdd % 2 != 0)
                {
                    if (inputOdd < 0)
                    {
                        Console.WriteLine($"The number is: {Math.Abs(inputOdd)}");
                        break;
                    }
                    Console.WriteLine($"The number is: {inputOdd}");
                    break;
                }
                else if (isOdd == false)
                {
                    Console.WriteLine("Please write an odd number.");
                    inputOdd = int.Parse(Console.ReadLine());
                }
            }
        }
    }
}