[C#] Sieve of Eratosthenes (Primes)

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

namespace Practice
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            bool[] prime = new bool[n+1];
            for (int i = 0; i < prime.Length; i++)
            {
                prime[i] = true;
            }
            prime[0] = prime[1] = false;
            for (int i = 2; i < prime.Length; i++)
            {
                if (prime[i])
                {
                    Console.Write(string.Join(", ",i));
                    for (int j = i; j < prime.Length; j+=i)
                    {
                        prime[j] = false;
                    }
                }
            }

        }
    }
}