C# Part I Operators and Expressions Exercise 7

using System;

class PrimeNumber
{
    static void Main()
    {

        int number = 0;
        while (number < 1 || number > 100)
        {
            Console.Write("Enter a positive integer number <= 100:");
            number = int.Parse(Console.ReadLine());
        }
        for (int num = 1; num <= number; num++)
        {
            if (number % num == 0 && num != 1 && num != number)
            {
                Console.WriteLine("The number {0} is not prime.", number);
                break;
            }
            else if (number / num == 1)
            {
                Console.WriteLine("The number {0} is prime.", number);
                break;
            }

        }
    }
}