using System;
using System.Diagnostics;
using System.Threading;

class ThreadPractice
{
    private static void Ide()
    {
        Thread.Sleep(3000); //3초 딜레이
        Console.WriteLine("[3] IDE : Visual Studio");
    }

    private static void Sql()
    {
        Thread.Sleep(3000); //3초 딜레이
        Console.WriteLine("[2] DBMS : SQL Server");
    }

    private static void Win()
    {
        Thread.Sleep(3000); //3초 딜레이
        Console.WriteLine("[1] OS : Windows Server");
    }

    static void Main()
    {
        //① 스레드
        ThreadStart ts1 = new ThreadStart(Win);
        ThreadStart ts2 = new ThreadStart(Sql);

        Thread t1 = new Thread(ts1);
        var t2 = new Thread(ts2);
        var t3 = new Thread(new ThreadStart(Ide))
        {
            Priority = ThreadPriority.Highest //우선순위 높게
        };

        t1.Start();
        t2.Start();
        t3.Start();

        //② 프로세스
        Process.Start("IExplore.exe");    //익스플로러 실행
        Process.Start("Notepad.exe");    //메모장 실행
    }
}