A simple console loop

ConsoleApp.cs

using System;
using System.Threading;
using System.Threading.Tasks;

namespace App
{
    class Program
    {
        static async Task<int> Main()
        {
            using var cts = new CancellationTokenSource();

            Console.CancelKeyPress += async (_, args) => 
            {
                args.Cancel = true;
                await Task.Yield();
                cts.Cancel();
            };

            try 
            {
                await RunLoopAsync(cts.Token);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                return ex.HResult;
            }
            return 0;
        }

        static async Task RunLoopAsync(CancellationToken token)
        {
            while (true)
            {
                await Task.Delay(1000, token);
                Console.WriteLine($"On thread: {Thread.CurrentThread.ManagedThreadId}");
            }
        }
    }
}