static void Main(string[] args)
{
// Client code.
//Intitialize different approvers.
Approver manager = new Manager();
Approver vicePresident = new VicePresident();
Approver president = new President();
// Set the chain of responsibility.
manager.AddSuccesor(vicePresident);
vicePresident.AddSuccesor(president);
// Generate and process purchase requests.
Purchase purchase_1 = new Purchase(5230, 2500, "Desk");
manager.ProcessRequest(purchase_1);
Purchase purchase_2 = new Purchase(2200, 990, "Mouse");
manager.ProcessRequest(purchase_2);
Purchase purchase_3 = new Purchase(3219, 1990, "keyboard");
manager.ProcessRequest(purchase_3);
Purchase purchase_4 = new Purchase(3219, 10000, "CPU");
manager.ProcessRequest(purchase_4);
}
