Question

我必须编写一个程序，要求用户提供5个测试分数，然后使用calcAverage和determineGrade方法，我需要获得平均分数和基于该分数的更高分数，以打印出屏幕。我陷入了我需要在defineGrade方法中编写的内容，这就是我到目前为止所拥有的...

package homework_chap5;
import java.util.Scanner;

public class Homework_Chap5 {

            //Pg 313 #7
 public static void main(String[] args) {
       Scanner s = new Scanner(System.in);

       System.out.print("Enter first test score: ");
       int s1 = s.nextInt();
       System.out.print("Enter second test score: ");
       int s2 = s.nextInt();
       System.out.print("Enter third test score: ");
       int s3 = s.nextInt();
       System.out.print("Enter fourth test score: ");
       int s4 = s.nextInt();
       System.out.print("Enter fifth test score: ");
       int s5 = s.nextInt();

       System.out.println("Average is " + calcAverage(s1, s2, s3, s4, s5) + 
       "\nYour grade is a " + determineGrade());
       }


    public static float calcAverage(int s1, int s2, int s3, int s4, int s5){ 
          float sum = s1 + s2 + s3 + s4 + s5;
          float average = sum / 5;
          return average;}  


     public static float determineGrade(int score) {
         return grade;  
     }

}

Answer 1

以下解决方案根据给定的测试次数计算平均得分。要计算成绩：

从平均分数中找出百分比。例如，如果测试进行了50分，则MAX_SCORE变为50，并将其转换为百分比。
一旦获得百分比，就创建一个百分比到成绩映射表。我的表格如下所示，您可以根据年级要求进行更改：

Percentage Grade
90-100     A
80-90      B
60-80      C
<60    D

下面是经过改进的代码，但仍然可以使其更通用：

    package homework_chap5;
import java.util.Scanner; 

public class Homework_Chap5 {
        final static int MAX_SCORE = 100; 

            //Pg 313 #7
 public static void main(String[] args) {
       Scanner s = new Scanner(System.in);

       System.out.print("Enter first test score: ");
       int s1 = s.nextInt();
       System.out.print("Enter second test score: ");
       int s2 = s.nextInt();
       System.out.print("Enter third test score: ");
       int s3 = s.nextInt();
       System.out.print("Enter fourth test score: ");
       int s4 = s.nextInt();
       System.out.print("Enter fifth test score: ");
       int s5 = s.nextInt();
       float average = calcAverage(s1, s2, s3, s4, s5);
       System.out.println("Average is " + calcAverage(s1, s2, s3, s4, s5) + 
       "\nYour grade is a " + determineGrade(average,MAX_SCORE));
       }


    public static float calcAverage(int s1, int s2, int s3, int s4, int s5){ 
          float sum = s1 + s2 + s3 + s4 + s5;
          float average = sum / 5;
          return average;
    }  


     public static char determineGrade(float average,float maxScore) {
         float percent = 100*(average/maxScore); 
         char grade = 'A';
       if( percent >= 90.0){
            grade = 'A';
       }else if( percent >= 80.0){
            grade = 'B';
       }else if( percent >= 60.0){
            grade = 'C';
       }else{
            grade = 'D';
       }
       return grade;

     }

}

尝试从多种方法获取信息

1 个答案: