using System;

public class Program

{

    public static void Main()

    {

int num1;

Console.WriteLine("Accept number:");

num1 = Convert.ToInt32(Console.ReadLine());

if (num1 == 0 && num1 == 1)

{

    Console.WriteLine(num1 + " is not prime number");

    Console.ReadLine();

}

else

{

    for (int a = 2; a <= num1 / 2; a++)

    {

        if (num1 % a == 0)

        {

            Console.WriteLine(num1 + " is not prime number");

            break;

        }

​

    }

    Console.WriteLine(num1 + " is a prime number");

    Console.ReadLine();

}

}

}