Task - B

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

namespace Task_A
{
  class Program
  {

    static void MetodoGenerico()
    {
      //int n = 0;
      //int a = 100 / n;

      for (int i = 0; i < 100; i++) Console.WriteLine(i);
    }

    static int Sommatore(int[] v)
    {
      int somma = 0;
      //int a = 100 / somma;

      foreach (int n in v) { somma += n; Thread.Sleep(100); }
      return somma;
    }

    static void Main(string[] args)
    {
      int[] v = { 1, 2, 3, 4 };

      //Task t1 = Task.Run(() => MetodoGenerico());

      //try
      //{ t1.Wait(); }
      //catch (AggregateException e)
      //{
      //  if (e.InnerException is DivideByZeroException)
      //    Console.WriteLine("Intercettato tentativo da metodo generico di divisione per zero");
      //}


      Task<int> t2 = Task<int>.Run(() => Sommatore(v));

      var aw = t2.GetAwaiter();

      aw.OnCompleted(() => Task.Run(() => MetodoGenerico()));


      while (true)
      {
        Console.WriteLine($"Stato: {t2.Status}");
        if (t2.Status == TaskStatus.RanToCompletion || t2.IsFaulted) break;
        Thread.Sleep(50);
      }

      try
      { Console.WriteLine(t2.Result); }
      catch(AggregateException e)
      {
        if (e.InnerException is DivideByZeroException)
          Console.WriteLine("Intercettato tentativo di divisione per zero");
      }




      Console.WriteLine("main terminato");
    }
  }
}