listing7.4.java

来自「java 完全探索的随书源码」· Java 代码 · 共 26 行

public class CashRegister {
  public int total;
  int salesValue[];
  Outputlog log;

  void printReceipt(int totalSale) {
    Tape.println("Total Sale = $"+ totalSale);
    Tape.println("Thank you for shopping with us.");
  }

  void sellItem(int value) {
    log.sale(value);
    total += value;
  }

  int totalSales() {
    int numSales, total = 0;
    numSales = log.countSales();

    for (int i = 1; i <= numSales; i++) {
      total += salesValue[i];
    }
    return total;
  }
}