Welcome to the Lounge

#include<iostream>
#include<time.h>

using namespace std;

int main(){
	const clock_t beginTime = clock();
	for (int i = 2; i < 2000000; i++)
	{		
		bool isPrime = true;
		for (int j = 2; j*j <= i; j++)
		{
			if (i%j == 0){
				isPrime = false;
				break;
			}
		}
		if (isPrime)
			cout << i << endl;		
	}
	cout << float(clock() - beginTime) / CLOCKS_PER_SEC;
}

using System;

namespace Console01
{
    class Program
    {

        static void Main(string[] args)
        {
            DateTime beginTime = DateTime.Now;
            for (int i = 2; i <= 2000000; i++)
            {
                bool isPrime = true;
                for (int j = 2; j * j < i; j++)
                {
                    if (i % j == 0)
                    {
                        isPrime = false;
                        break;
                    }
                }
                if (isPrime)
                    Console.WriteLine(i);
            }
            TimeSpan ts = DateTime.Now - beginTime;
            Console.WriteLine(ts.Seconds);
        }

    }
}