java - 处理数学公式

Question

我希望能够制作一个使用以下公式的程序:

z= 1/y (x) 

我想问以下问题:

1. 输入今年发生的次数(这部分我知道该怎么做)(y)

2. 今天发生了多少次(x)

到目前为止我唯一拥有的是……

import java.util.Scanner;
import javax.swing.JOptionPane;

public class javaCalculator 
{

    public static void main(String[] args) 
    {
        int num1;
        int num2;
        String operation;


        Scanner input = new Scanner(System.in);

        System.out.println("please enter the first number");
        num1 = input.nextInt();

        System.out.println("please enter the second number");
        num2 = input.nextInt();

        Scanner op = new Scanner(System.in);

        System.out.println("Please enter operation");
        operation = op.next();

        if (operation == "+");
        {
            System.out.println("your answer is" + (num1 + num2));
        }
        if  (operation == "-");
        {
            System.out.println("your answer is" + (num1 - num2));
        }

        if (operation == "/");
        {
            System.out.println("your answer is" + (num1 / num2));
        }
        if (operation == "*")
        {
            System.out.println("your answer is" + (num1 * num2));
        }


    }
}

有人可以帮忙吗？

谢谢! (我在高中，想输入我制作的公式，但我还需要将其转换为html..

Answer 1

您可以尝试如下操作:

import java.util.Scanner;

    class ComputeXbyY
    {
        public static void main(String args[])
        {
            // Using Scanner for Getting Input from User
            Scanner in = new Scanner(System.in);

            System.out.println("Please enter: y - ");
            int y = in.nextInt();
            System.out.println("You entered y "+y);

            System.out.println("Please enter: x - ");
            int x = in.nextInt();
            System.out.println("You entered x "+x);

            if(y!=0){
                float res = (float)x/(float)y;
                System.out.println("Result:  "+res);        
            }
            in.close();
        }
    }