Java代碼簡單數學

Question

我堅持下面的代碼3的解決方案。 我需要插入一個簡單的數學問題，在翻閱我的書並從課堂上觀看視頻之后我無法想到這一點。 我希望程序能夠提出這樣一個問題：“8的強大之處是什么？”答案為“64”。 有誰願意幫幫我嗎？ 如果有人能讓我開始，我可以提出另外兩個問題！ 非常感謝你！！ 金

import java.util.Scanner;  //allows for input

public class ASG03 {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in); //allows for input

        //Step 1 - Declare and initialize variables
        String candidateName = "";
        String responseE = "";

        int option = 0;
        double score = 0;


        if (score <=85)
            responseE = "Definite";
        else if (score <=70)
            responseE = "Likely";
        else if (score <=60)
            responseE = "Maybe";
        else
            responseE = "No";

        String responseI = "";

        if (score <=85)
            responseI = "Yes";
        else if (score <=70)
            responseI = "Yes";
        else if (score <=60)
            responseI = "Yes";
        else
            responseI = "No";

        //Step 2 -  Process input

        System.out.println("Enter candidate name: ");
        candidateName = input.nextLine();
        System.out.println("Enter score 0 -100: ");
        score = input.nextDouble();
        System.out.println();



        System.out.println("Enter 1 to set employment category ");
        System.out.println("Enter 2 to set interview possibility ");
        System.out.println("Enter 3 to view a sample test question ");
        System.out.println("Enter option now -> ");
        option = input.nextInt();





        //Step 3 and 4 - Process calculations and output
        switch(option)
        {
        case 1:
            System.out.println("You are now setting the employment category...");
            //can use nested if else
            System.out.println("Employment category =  " + responseE);

            break;


        case 2:
            System.out.println("You are now setting the interview possibilities...");
            System.out.println("Interview possibilites = " + responseI);



            break;

        case 3:
            System.out.println("You are now viewing a sample test question...");
            //use random and power from Math library


        default:


        }//end of switch

    }//end of main

}//end of class

Answer 1

當您運行程序時，在main您將始終將responseE設置為“Definite” 。 因為：

查看代碼流：

double score = 0;
if (score <=85)
  responseE = "Definite";
else if (score <=70)
...
...

第一個if總是滿足，所以它總是被執行。

此外，即使您在閱讀得分后評估responseE score <= 85 ，您還需要再次考慮如何編寫條件。請注意，如果score <= 85則score <= 70 ....

你應該有這樣的東西：

在切換之前：

responseE = getResponse(score);

這是方法getResponse ：

private static String getResponse(double score) {
  if (score <=85 && score >70)
    return "Definite";
  else if (score <=70 && score > 60)
    return "Likely";
  else if (score <=60 && score > 40) //For example..
    return "Maybe";
  return "No";
}

讀取輸入后要評估的其他字段也是如此。

Answer 2

在我給你答案之前，我需要更多的信息。 看起來代碼想要一個隨機數生成器，但是在你的問題中你要求8 ^ 2或8 * 8。 你想要哪個？ 我問，因為隨機數生成與硬編碼數變量有很大不同