using System;

​

namespace hydrocarbons

{

    class Program

    {

        static void Main(string[] args)

        {

            Console.WriteLine("Enter the current temperature. ");

            int temp = int.Parse(Console.ReadLine());

​

            if (temp <= 0)

            {

                Console.WriteLine("At {0} degrees centigrade,\nwater will be a solid.",temp);

            }

            else if (temp > 0 && temp < 100)

            {

                Console.WriteLine("At {0} degrees centigrade,\nwater will be a liquid.", temp);

            }

            else if (temp >= 100)

            {

                Console.WriteLine("At {0} degrees centigrade,\nwater will be a gas.", temp);

            }

            Console.ReadLine();

        }

    }

}

​