*我行我素購物系統簡單的支付界面
*@author:楊曉東
*@date:2014-04-02
*/
public class Shops {
public static void main(String [] args){
System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *");
System.out.println("\t\t\t1.登 錄 系 統");
System.out.println("\t\t\t2.更 改 管 理 員 密 碼");
System.out.println("\t\t\t3.退 出");
System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *");
System.out.print("請輸入您的選擇：");
java.util.Scanner input = new java.util.Scanner(System.in);
int choice1 = input.nextInt();//此處定義一個choice即可
if(choice1 == 1) {
System.out.println("\t\t\t歡迎使用我行我素購物管理系統");
System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *");
System.out.println("\t\t\t1.客 戶 信 息 管 理");
System.out.println("\t\t\t2.購 物 結 算");
System.out.println("\t\t\t3.真 情 回 饋");
System.out.println("\t\t\t4.返 回 上 一 級");
System.out.println("* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *");
System.out.println("請輸入您的選擇：");
// int choice = input.nextInt();
}else{
System.out.println("系統功能正在升級中...");
}
int choice2 = input.nextInt();
if (choice2 == 2){
System.out.println("商城現有商品如下：");
System.out.println("商品編號\t\t商品名稱\t\t商品價格");
System.out.println("1\t\t雲南白藥\t\t￥18.00");
System.out.println("2\t\t小米手機\t\t￥1，998.00");
System.out.println("3\t\t小黑\t\t￥4，998.00");
System.out.println("4\t\t拖鞋\t\t￥25.80");
System.out.println("5\t\t醬油\t\t￥5.60");
System.out.println("6\t\t汽車模型\t\t￥350.00");
System.out.println("7\t\t坦克模型\t\t￥400.00");
System.out.println("8\t\t玩具槍\t\t￥99.80");
System.out.println("請輸入您要購買的產品編號：");
}else {
System.out.println("系統功能正在升級中...");
}
int num = input.nextInt();
String name = null; double price = 0; //定義2個變量
switch(num){
case 1:
name = "雲南白藥";
price = 18.00;
break;
case 2:
name = "小米手機";
price = 1998.00;
break;
case 3:
name = "小黑";
price = 4998.00;
break;
case 4:
name = "拖鞋";
price = 25.00;
break;
case 5:
name = "醬油";
price = 5.60;
break;
case 6:
name = "汽車模型";
price = 350.00;
break;
case 7:
name = "坦克模型";
price = 400.00;
break;
case 8:
name = "玩具槍";
price = 99.80;
break;
default:
System.out.println("沒有您需要的商品編號...");
break;
}
System.out.print("請輸入您要購買的產品數量：");
int amount = input.nextInt();
int value = (int)(price * amount * 0.85);//強制類型轉換，可能會失精度
double money = price * amount;
System.out.println("尊敬的用戶：小貓");
System.out.println("產品名稱\t\t產品單價\t\t購買數量\t\t產品總價");
System.out.println(name + "\t\t" + price + "\t\t" + amount + "\t\t"+ money);
System.out.println("您購買產品總價爲：" + money);
System.out.println("按您當前的積分，您的折扣是：0.85");
System.out.println("您的應付款爲：" + value);
System.out.println("請付款：");
double total = input.nextDouble();
double change = total - value;
if (total > value){
System.out.println("付款成功！");
System.out.println("找零：" + change);
System.out.println("歡迎下次光臨！");
}else{
System.out.println("請重新寵幸本系統...");
}
}
}
