java - Java程序来计算学生通过的学分？

Question

我想实施一个程序，以在一个学期的课程中返回学生的通过状态。比如说，他在 3 学分课程中获得 A，在 4 学分课程中获得 B，在 3 学分课程中获得 F。我如何计算学生通过的学分数量？

条件是只要他的GPA在1.33（或D-）以上，他就通过了。换句话说，如果他得了 A，那么他就不会通过。我的代码现在似乎不起作用。

    if (gradeValue >= 1.33)
                pass = totalunits;

标签： javasumiteration

Answer 1

这是我的完整答案。剩下的唯一一件事是我不知道如何保留 3 位小数……当我想出一些东西时，我会更新。

 import java.util.*;
 import java.text.*;
 import java.lang.Math; 
 public class Project1_Trial3 {
        public static void main(String args[])
        {
            Scanner scanner = new Scanner(System.in);

            //Input the term
        System.out.println("Please enter the term of your grade calculation (for example, Fall 2015): ");
        String term = scanner.nextLine();

        //Input the number of courses that the student is enrolled in
        System.out.println("Please enter the number of courses that you are enrolled in "+term+": ");
        int numberofcourses = scanner.nextInt();

        //Declaration
        String ClassName[] = new String[numberofcourses];
        String Description[] = new String[numberofcourses];
        String grade[] = new String[numberofcourses];
        float Units[] = new float[numberofcourses];
        double gradeValue = 0;
        float finalgrade[] = new float[numberofcourses];
        float totalunits = 0;
        float fail = 0;
        float pass = 0;
        float totalgradepoints = 0;
        float gpa = 0;
        String standing = null;

        //Arrays for class number, description, units, grade, grade point
        //Here, input class number, description, units, and grade
        for(int i = 0; i < numberofcourses; i++)
        {
            scanner.nextLine();
            System.out.println("Please enter your #"+(i+1)+" class name: ");
            ClassName[i] = scanner.nextLine();
            System.out.println("Please enter your #"+(i+1)+" class description: ");
            Description[i] = scanner.nextLine();
            System.out.println("Please enter your #"+(i+1)+" class units: ");
            Units [i] = scanner.nextInt();
            scanner.nextLine();
            System.out.println("Please enter your #"+(i+1)+" class grade: ");
            grade[i] = scanner.nextLine();

            if (grade[i].equals ("A"))
                gradeValue= 4.00;
              else if (grade[i].equals("A-"))
                gradeValue= 3.67;
              else if (grade[i].equals("B+"))
                gradeValue = 3.33;
              else if (grade[i].equals("B"))
                gradeValue = 3.00;
              else if (grade[i].equals ("B-"))
                gradeValue = 2.67;
              else if (grade[i].equals("C+"))
                gradeValue = 2.33;
              else if (grade[i].equals("C"))
                gradeValue = 2.00;
              else if (grade[i].equals ("D+"))
                gradeValue = 1.33;
              else if (grade[i].equals ("D"))
                gradeValue = 1.00;
              else if (grade[i].equals ("F"))
                gradeValue = 0;
              else
                System.out.println ("Invalid Grade");
                finalgrade[i] = (float) (gradeValue * Units[i]);
        //Get the total number of units
                totalunits += Units[i];

        //Get the total grade points
                totalgradepoints += finalgrade[i];
                if (grade[i].equals("F"))
                    fail = Units[i];
                pass = totalunits - fail;
                gpa = totalgradepoints / totalunits;

        }

        //Get status
        if (gpa > 2.0)
            standing = "Good standing";
        else if (1.0 < gpa | gpa < 1.999)
            standing = "On probation";
        else
            standing = "Dismissed";

        //Round to 3 decimals and get final results



        //Finally, print out the report

        //Print out the heading
        System.out.println("Class Grades - "+term+" Term");
        System.out.println("Office Grades");

        //Print out the table
        System.out.println(String.format("%20s %7s %25s %7s %10s %7s %7s %10s %10s", "Class", "|", "Description", "|", "Units", "|", "Grade", "|", "Gradepoint"));
        System.out.println(String.format("%s", "-------------------------------------------------------------------------------------------------------------------------------------"));
        for(int i = 0; i < numberofcourses; i++)
        {
            DecimalFormat format = new DecimalFormat("#.#####");
            format.format(totalunits);
            format.format(fail);
            format.format(totalgradepoints);
            format.format(gpa);
            System.out.println(String.format("%20s %7s %-25s %7s %10s %7s %-7s %10s %-10s", ClassName[i], "|", Description[i], "|", Units [i], "|", grade[i], "|", finalgrade[i]));
        }
        System.out.println("Term Statistics - "+term+" Term");
        System.out.println(String.format("%s", "-----------------------------------------------------------------------------------------------"));
        System.out.println(String.format("%40s %7s %25s", "", "|", "From Enrollment"));
        System.out.println(String.format("%40s %7s %25s", "", "|", ""));
        System.out.println(String.format("%40s %7s %25s", "Units Towards GPA:", "|", ""));
        System.out.println(String.format("%40s %7s %25s", "Taken", "|", totalunits));
        System.out.println(String.format("%40s %7s %25s", "Passed", "|", pass));
        System.out.println(String.format("%s", "-----------------------------------------------------------------------------------------------"));     
        System.out.println(String.format("%40s %7s %25s", "GPA Calculation", "|", ""));
        System.out.println(String.format("%40s %7s %25s", "Total Grade Points", "|", totalgradepoints));
        System.out.println(String.format("%40s %7s %25s", "/ Units Taken Toward GPA", "|", totalunits));
        System.out.println(String.format("%s", "-----------------------------------------------------------------------------------------------"));
        System.out.println(String.format("%40s %7s %25s", "= GPA", "|", gpa));
        System.out.println(String.format("%40s %7s %25s", "Status", "|", standing));
    }

}