当我运行此程序时,阅读器仅读取并显示每隔一行。我究竟做错了什么?

while (imputFile.hasNext()) {
            grade = imputFile.nextDouble();
            System.out.println(grade);
            if (grade < 0 || grade > 100)
                System.out.print("Grade " + grade + " was invalid and ignored");
            else {
                numberOfGrades++;
                sum += imputFile.nextDouble();
            }
        }
    averageGrade = sum/numberOfGrades;
    System.out.println("There were "+ numberOfGrades + " valid grades.");
    System.out.printf("%3.2f",averageGrade);

最佳答案

您在循环中两次使用imputFile.nextDouble()

grade = imputFile.nextDouble();
//....
sum += imputFile.nextDouble();


尝试将最后一行更改为

sum += grade;


使用已经读取的值,而不是读取下一个值。

关于java - 在阅读试图确定有效成绩的文件时,为什么文件阅读器会跳过行?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/19170950/

10-09 01:23