using System;
using System.Threading;
class Program
{
static void Main()
{
DateTime startTime = DateTime.Now;
TimeSpan duration = TimeSpan.FromSeconds(3);
DateTime endTime = startTime.Add(duration);
while (DateTime.Now < endTime) {
Thread.Sleep(1000);
Console.WriteLine(DateTime.Now);
}
}
}
/*
run:
10/11/2024 08:33:10
10/11/2024 08:33:11
10/11/2024 08:33:12
*/