Question

问题是： -

为Majan电力设计计费系统。 Majan电力有两种类型的客户：国内和商业。不同的费率适用于国内连接和业务。

识别所需数据并实施所需操作。   程序应显示以下菜单：
      欢迎来到Majan电费账单
  1.国内客户
  2.商业客户
  输入您的选择：
      如果选择为1，请阅读必要的信息，查找账单，打印账单明细       如果选择为2，请阅读必要的信息，查找账单，打印账单明细。

我解决了以下问题 - ：

    public void Domestic( String Dname, String Did,int current , int last , int cost )
    {
        int Dactual= current - last;

        if(Dactual<=500)
                {

            cost = (int) (0.15 * Dactual);

                 System.out.println("The cost is "+cost );
                }
                           else if(Dactual>501 && Dactual<1000)
                                   {
                                       cost = (int) (0.20 * Dactual);
                                   System.out.println("The cost is "+cost );
                                   }


                else
{
 cost = (int) (0.25 * Dactual);
System.out.println("The cost is "+cost );
}

    }

    public void Business(String Bid, String Bname, int Bcurrent , int Blast ,  int cost)
    {
          int Bactual= Bcurrent - Blast;

                if(Bactual<=600)
                {
              cost = (int) (0.15 * Bactual);

                  System.out.println("The actual reading is "+Bactual);
                 System.out.println("The cost is "+cost );
                }
                           else if(Bactual>601 && Bactual<1000)
                                   {
                                       cost = (int) (0.20 * Bactual);
             System.out.println("The actual reading is "+Bactual);
                                       System.out.println("The cost is "+cost );
                                   }


                else
{
 cost = (int) (0.35 * Bactual);
 System.out.println("The actual reading is "+Bactual);
 System.out.println("The cost is "+cost );
}
    }


    public static void main(String[] args) {
            Scanner sc = new Scanner (System.in);
               Majan obj = new Majan() ;
         System.out.println("Welcome to Majan Electricity Billing");
         System.out.println("1. Domestic Customer  ");
         System.out.println("2. Business Customer ");
         System.out.println("Select your choice");
         int ch = sc.nextInt();
          switch(ch)
            {
                case 1 :
        System.out.println("Enter your name");
        String Dname= sc.next();
        System.out.println("Enter your Account No.");
        String Did= sc.next();
        System.out.println("Enter your current month reading");
         int current= sc.nextInt();
        System.out.println("Enter your previous month reading ");
                   int Dlast= sc.nextInt();
                    obj.Domestic(Dname, Did, current, Dlast, Dlast);
                    break;
                case 2 :
        System.out.println("Enter your name");
        String Bname= sc.next();
        System.out.println("Enter your Account No. ");
        String Bid= sc.next();
        System.out.println("Enter your current month reading");
         int Bcurrent= sc.nextInt();
        System.out.println("Enter your previous month reading ");
                   int Blast= sc.nextInt();
                      obj.Business(Bid, Bname, Bcurrent, Blast, Blast);
                    break;
                      default :
                          System.out.println("Wrong choice ! ");

}

}
}

问题是 - ：

当我计算时，我无法看到最后的细节“名称，帐号等”。和---这句话

System.out.println("The actual reading is "+Bactual);

dosnt出现了！

输出结果为： -

 Welcome to Majan Electricity Billing
    1. Domestic Customer  
    2. Business Customer 
    Select your choice
1
Enter your name
juju
Enter your Account No.
345
Enter your current month reading
300
Enter your previous month reading 
100
The cost is 30**

谢谢你

Answer 1

如果您选择1（国内客户），则调用Domestic方法，实际上该方法不会执行System.out.println("The actual reading is "+Bactual);。该行代码仅由您的类的Bussiness方法执行（选项2）。

Answer 2

伙计你传递的值是1 Domestic，而你的家庭功能是

public void Domestic( String Dname, String Did,int current , int last , int cost )
{
    int Dactual= current - last;
    if(Dactual<=500)
    {
        cost = (int) (0.15 * Dactual);
        System.out.println("The cost is "+cost );
    }
    else if(Dactual>501 && Dactual<1000)
    {
        cost = (int) (0.20 * Dactual);
        System.out.println("The cost is "+cost );
    }
    else
    {
        cost = (int) (0.25 * Dactual);
        System.out.println("The cost is "+cost );
    }
}

你没有任何

的行

System.out.println("The actual reading is "+Bactual);

这就是你没有在输出中得到The actual reading is的原因。

不能在账单计划中打印声明

2 个答案: