用户输入是的继续程序-Java 学习之路

好的，所以我的程序工作正常，但最后它询问用户是否想要输入另一组整数，如果他们输入"yes"，则该过程重新开始 . 我的程序重新开始，但它保留了所有相同的用户输入，因此它只是不断重复原始输入的相同输出 .

这是我的代码

import java.util.Scanner;

public class PositiveNegative {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        System.out.print("Input a list of integers (end with 0): ");
        int nums = input.nextInt();

        String answer;
        int pos = 0;
        int neg = 0;
        int total = 0;
        int count = 0;
        double avg = 0;

        do {
            while (nums != 0) {
                if (nums >= 1) {
                    pos++;
                } else {
                   neg++;
                }
                total = total + nums;
                count++;

                avg = total * 1.0 / count;

                System.out.print("Input a list of integers (End with 0): ");
                nums = input.nextInt();
            }
            System.out.print("# of positives are: " + pos + "\n" + "# of negatives are : " + neg + "\n" + "The total: " + total + "\n" + "The average: " + avg);
            System.out.print("\nWould you like to continue with new inputs? ");
            answer = input.next();
        } while (answer.equalsIgnoreCase("Yes"));
    }  
}

我目前的输出如下：

输入整数列表（以0结尾）：1输入整数列表（以0结尾）：2输入整数列表（以0结束）： - 1输入整数列表（以0结束）：3输入一个整数列表（以0结尾）：0个正数为：3个负数为：1总数：5平均值：1.25你想继续新的输入吗？是肯定的数量是：3个负数是：1总数：5平均值：1.25您想继续新的输入吗？

它应该看起来像这样：

正输入数量：3个负输入数量：1总数：5.0平均值：1.25您想继续新输入吗？是输入整数列表（以0结尾）：0没有输入任何数字，除了0你想继续新的输入吗？没有

2 回答

做这个

import java.util.Scanner;

public class PositiveNegative {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        String answer;
        do {
            System.out.print("Input a list of integers (end with 0): ");
            int nums = input.nextInt();

            int pos = 0;
            int neg = 0;
            int total = 0;
            int count = 0;
            double avg = 0;

            while (nums != 0) {
                if (nums >= 1) {
                    pos++;
                } else {
                   neg++;
                }
                total = total + nums;
                count++;

                avg = total * 1.0 / count;

                System.out.print("Input a list of integers (End with 0): ");
                nums = input.nextInt();
            }

            if(count == 0) {
                System.out.print("No numbers were entered except 0");
            } else {
                System.out.print("# of positives are: " + pos + "\n" + "# of negatives are : " + neg + "\n" + "The total: " + total + "\n" + "The average: " + avg);
            }
            System.out.print("\nWould you like to continue with new inputs? ");
            answer = input.next();
        } while (answer.equalsIgnoreCase("Yes"));
    }  
}

回复于 2024-04-29T15:07:41+08:00

变量的声明应该在 do ... while 块内，以便在用户想要继续时可以初始化它们 .

更换

int pos = 0;
 int neg = 0;
 int total = 0;
 int count = 0;
 double avg = 0;

 do{
     //...

同

do {
    int pos = 0;
    int neg = 0;
    int total = 0;
    int count = 0;
    double avg = 0;
    //...

回复于 2024-04-29T15:07:41+08:00

用户输入是的继续程序

2 回答

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