public static LeiFeng CreateLeiFeng(string type)
{
LeiFeng result = null;
switch (type)
{
case "Undergraduate":
result = new Undergraduate();
break;
case "Volunteer":
result = new Volunteer();
break;
}
return(result);
}
static void main(string [] args)
{
LeiFeng xueleifeng = new Undergraduate();
xueleifeng.BuyRice();
xueleifeng.Sweep();
xueleifeng.Wash();
LeiFeng student1 = new Undergraduate();
student1.BuyRice();
LeiFeng student2 = new Undergraduate();
student1.Sweep();
LeiFeng student3 = new Undergraduate();
student1.Wash();
}
