This program will be used to show "Running Many Programs At Once"

SampleForRunningManyProgramsAtOnce.cs

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Security;
using System.Threading;

internal class Program
{
    [DllImport("Kernel32.dll"), SuppressUnmanagedCodeSecurity]
    public static extern int GetCurrentProcessorNumber();

    private static void Main()
    {
        var currentProcess = Process.GetCurrentProcess();
        Console.WriteLine($"Please enter any string for process {currentProcess.Id} which is executed by {GetCurrentProcessorNumber()}: ");
        var readline = Console.ReadLine();
        var i = 0;
        while (i++ < 12)
        {
            Console.WriteLine($"For process {currentProcess.Id}  which is executed by {GetCurrentProcessorNumber()}, you have entered: {readline}");
            Thread.Sleep(1000);
        }
    }
}