static void Execute(IAggregate function, List <int> numbers) //passing the list of ints from the command line (args) into the execute
{
foreach (var number in numbers)
{
function.Insert(number);
}
Console.WriteLine(function.Calculate());
}
static void Execute(IAggregate function)
{
function.Insert(4);
function.Insert(4);
Console.WriteLine(function.Calculate());
}