static void Main(string[] args)
{
stack b = new stack();
b.push(new customer("ofir", "levi", 1234.5));
b.push(new customer("ron", "buch", 45679.5));
b.push(new customer("tomer", "lerner", 9513.45));
b.push(new customer("hai", "eliasy", 7456.2));
b.push(new customer("yaakov", "ellyhasov", 5613.5));
b.show();
b.Peek();
b.Pop();
Console.WriteLine("******************\none customer has been deleted\n******************");
b.show();
b.Pop();
Console.WriteLine("******************\none customer has been deleted\n******************");
b.show();
b.Pop();
Console.WriteLine("******************\none customer has been deleted\n******************");
b.show();
b.Pop();
Console.WriteLine("******************\none customer has been deleted\n******************");
b.show();
b.Pop();
Console.WriteLine("******************\none customer has been deleted\n******************");
b.show();
b.Pop();
b.show();
}