public static Customer Make(string id, string name, string address, string credit)
{
Customer c = new Customer();
c.id = id;
c.name = name;
c.address = address;
c.credit = credit;
return c;
}
public Customer AddCustomer(Customer c)
{
System.Console.WriteLine(c);
// return c;
return Customer.Make("123", "wlliam", "wc", "3");
}
