Check if number is prime number
var number; Console.WriteLine(“Accept number:”); number = Convert.ToInt32(Console.ReadLine()); if (IsPrime(number)) { Console.WriteLine(“It is prime”); } else { Console.WriteLine(“It is not prime”); } public static bool IsPrime(int number) { if (number <= 1) return false; if (number == 2) return true; if (number % 2 == 0) return false; var boundary = (int)Math.Floor(Math.Sqrt(number)); for (int i = … Read more