小题目—成绩划分等级

1. package 成绩等级;
   
   import com.sun.jdi.event.Event;
   import com.sun.jdi.event.ExceptionEvent;
   
   import java.util.Scanner;
   
   public class Score {
       public static void main(String[] args) {
           Scanner scanner = new Scanner(System.in);
           System.out.println("请输入成绩：");
           double score = scanner.nextDouble();
           scanner.close();
   //判断语句
           if (score > 100 || score < 0) {
               System.out.println("输入的成绩不在0～100的范围内");
           } else if (score >= 90) {
               System.out.println("A");
           } else if (score >= 80) {
               System.out.println("B");
           } else if (score >= 60) {
               System.out.println("C");
           } else {
               System.out.println("D");
           }
       }
   }