Question

所以，我正在制作一个基本的小费计算器，我需要知道如何将用户输入的15％，23％等改为0.15,0.23等。

这是我目前的代码：

import java.util.Scanner;
public class TipCalc {
    public static void main(String args[]) {
        Scanner meal = new Scanner(System.in);
        double food, tax, tip, fin;
        System.out.println("How much was the meal?");
        food = meal.nextDouble();
        System.out.println("How much was the tax?");
        tax = meal.nextDouble();
        System.out.println("How much would you like to tip? I recomend 15%");
        tip = meal.nextDouble();
    }
}

请帮忙！谢谢！

Answer 1

double tip;
tip = meal.nextDouble() / 100;

或者

double tip = 15.0;
tip  = tip / 100;

甚至

double tip = 15.0;
tip /= 100;

Answer 2

如果您的提示输入为15。

使用

tip = meal.nextDouble() / 100.0;

System.out.println(tip);

输出：0.15

如何在Java中将15％更改为0.15？

2 个答案: