得错了餐费

Question

** **

考虑到用餐的膳食价格（膳食的基本费用），小费百分比（作为小费添加的膳食价格的百分比）和税收百分比（膳食价格作为税收的百分比），找到并打印膳食的总费用。

这是我的代码

public class Solution3 {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        double mealCost = scan.nextDouble(); // original meal price
        int tipPercent = scan.nextInt(); // tip percentage
        int taxPercent = scan.nextInt(); // tax percentage
        double tip = mealCost *(tipPercent/100);
        double tax = mealCost*(taxPercent/100);
        double total= mealCost+tip+tax;
        // cast the result of the rounding operation to an int and save it as totalCost 
        int totalCost = (int) Math.round(total);

         System.out.println("The total meal cost is "+totalCost+" dollars");
    }
}

预期产出

The total meal cost is 15 dollars.

我的输出

The total meal cost is 12 dollars.

请帮帮我。

任何帮助都将不胜感激。

Answer 1

这是一个整数除法问题。

试试这个：

double tip = mealCost *(tipPercent/100.0);
double tax = mealCost*(taxPercent/100.0);

Answer 2

将答案计算为：

double tip=(mealCost*tipPercent)/100;
double tax=(mealCost*taxPercent)/100;