public DiscountFather GetDis(string input)
{
DiscountFather df = null;
switch (input)
{
case "1": df = new Discount1();
break;
case "2": df = new DiscountByRate(0.9);
break;
case "3":
df = new DiscountByRate(0.85);
break;
case "4":
df = new DiscountMN(300, 50);
break;
case "5":
df = new DiscountMN(500, 100);
break;
}
return(df);
}
public void ServeCus()
{
Console.WriteLine("Welcome to our supermarket, what would you like to buy?");
Console.WriteLine("We have Acer, SamSung, SoySauce, and Banana");
string strType = Console.ReadLine();
Console.WriteLine("How much would you like to buy?");
int count = Convert.ToInt32(Console.ReadLine());
ProductFather[] pros = wh.SellPros(strType, count);
double realMoney = GetMoney(pros);
Console.WriteLine("Total amount is ${0}", realMoney);
Console.WriteLine("Please choosee an discount method: 1--no discount 2--10% off 3--15% off 4--$50 off out of every $300 5--$100 off out of every $500");
string input = Console.ReadLine();
DiscountFather df = GetDis(input);
double totalMoney = df.GetTotalMoney(realMoney);
Console.WriteLine("Please pay ${0}", totalMoney);
Console.WriteLine("This is your receipt");
foreach (var item in pros)
{
Console.WriteLine("Item:" + item.Name + "\t" + "Unit Price:" + item.Price + "\t" + "\t" + "Item ID:" + item.ID);
}
}