Int awaiting

Program.cs

using System;
using System.Runtime.CompilerServices;
using System.Threading.Tasks;

public class Program
{
    public static async Task Main()
    {
        Console.WriteLine(await 1);
    }
}

public static class IntTaskExtensions
{
    public static IntAwaiter GetAwaiter(this int number) => new IntAwaiter(number);

    public class IntAwaiter : INotifyCompletion
    {
        private int result;
        
        public IntAwaiter(int number)
        {
            result = number + 1;
        }
        
        public bool IsCompleted => true;

        public void OnCompleted(Action continuation) { }

        public int GetResult() { return result; }
    }
}