07. Primes in Given Range

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

namespace ConsoleApplication10
{
    class Program
    {
        static bool isPrime(int n)
        {
            bool prime = true;
            if (n == 0 || n == 1)
                prime = false;
            for (int i = 2; i <= n/2; i++)
            {
                if (n % i == 0)
                {
                    prime = false;
                }
                else
                {
                    prime = true;
                }
            }
            //if (prime) Console.WriteLine("True");
            //else Console.WriteLine("False");
            return prime;
        }
        private static List<int> FindPrimesInRange(int startNum, int endNum)
        {
            var primes = new List<int>();
            for (int currentNum=startNum; currentNum<=endNum; currentNum++)
            {
                if (isPrime(currentNum))
                {
                    primes.Add(currentNum);
                }
            }
            return primes;
        }
        static void Main(string[] args)
        {
            var startNum = int.Parse(Console.ReadLine());
            var endNum = int.Parse(Console.ReadLine());
            var primes = FindPrimesInRange(startNum, endNum);
            Console.WriteLine(string.Join(", ",primes));
        }
    }
}