java结账系统

import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStreamReader;
public class 轻轻巧巧 {
 public static void main(String[] args)  throws IOException {
  BufferedReader reader = new BufferedReader(new InputStreamReader(
    System.in));
  int a = 0;
  int b = 0;
  int c = 0;
  System.out.println("请输出结账员需要接待的顾客次数：");
  a = Integer.parseInt(reader.readLine());
  for(int i = 0; i < a; i++) {
   b = 0;
   do {
    System.out.println("请输出商品的单价：");
    int d = Integer.parseInt(reader.readLine());
    if(d < 0) {
     System.out.println("商品的单价不能小于0！");
     hasMoreGoods = 1;
     continue;
    }
         System.out.println("请输入商品的数量：");
         int amount = Integer.parseInt(reader.readLine());
         if(d < 0) {
          System.out.println("商品数量不能小于0！");
          hasMoreGoods = 1;
          continue;
         }
         totalCost = totalCost + d * amount;
         System.out.println("当前总价为：" + totalCost);
               System.out.println("还有商品需要结算吗（输入1为有，" +
                 "其它数字为没有）？");
         hasMoreGoods = Integer.parseInt(reader.readLine());
   
   } while (haMoreGoods == 1);
        System.out.println("本次消费为：" + totalCost);
        System.out.println("=====谢谢光临，欢迎下次再来！=====");
    
  } 
  System.out.println(serveTimes + "次结算已经结束，结账员可以休息啦！");
 }
}