Question

因此，作为我班级的项目，我需要制作一个程序，让用户输入ISBN编号的前n位数字，并以第十位数字作出响应。我无休止地搜索了一些东西，它允许我的程序询问用户是否要再次运行程序，然后让它再次运行程序，如果他们输入“是”或“Y”。我发现的东西没有用，通常它最终会循环“你想输入另一个ISBN而不实际让他们输入ISBN。我的代码在下面，谢谢你们的任何帮助！

import java.util.Scanner;
public class ISBNCheckSum {

    public static void main(String[] args) 
    {
        Scanner keyboard = new Scanner(System. in );
        // limiter 
        int isbn10 = 9;
        // to take in response of user
        long userResponse;
        // accumulator 
        int ISBnNum = 1;
        //current count of ISBN
        long isbnCount = 0;
        // This is used to multiply the userresponse by 1,2,3... up to 9
        int multiplier = 1;

        while (ISBnNum <= isbn10) 
        {
            System.out.println("Please ISBN number  " + ISBnNum);
            //to enter the User response
            userResponse = keyboard.nextInt();
            //Multiply the user response by multiplier variable
            userResponse = userResponse * multiplier;
            //add to accumulator 
            ISBnNum = ISBnNum + 1;
            // put user into final answer
            isbnCount = isbnCount + userResponse;
            // increase multiplier
            multiplier = multiplier + 1;
        }

        long checkSum;
        checkSum = isbnCount % 11;
        System.out.println(checkSum);
    }
}
}

Answer 1

尝试这样的事情（我已经更改了iSBnNum变量名称）：

    boolean askAgain = true;
    while (askAgain) {
        iSBnNum = 1;
        while (iSBnNum <= isbn10) {
            System.out.println("Please ISBN number  " + iSBnNum);
            // to enter the User response
            userResponse = keyboard.nextInt();
            // Multiply the user response by multiplier variable
            userResponse = userResponse * multiplier;
            // add to accumulator
            iSBnNum = iSBnNum + 1;
            // put user into final answer
            isbnCount = isbnCount + userResponse;
            // increase multiplier
            multiplier = multiplier + 1;
        }

        System.out.println("Ask again (Y/N)?");
        String answer = keyboard.next();

        askAgain = answer.equalsIgnoreCase("Y");
    }

创建do-while循环以提示用户是否要输入另一个ISBN

1 个答案: