每日总结

今天课堂进行了课堂小测，成绩测试

package ceshi;
import java.util.Scanner;
public class ceshi {
    public static void main(String []args) 
    {
        System.out.println("请输入成绩：");
        Scanner sc = new Scanner(System.in);
        int student_num = sc.nextInt();
        if(student_num > 0 && student_num < 60)
        {
            System.out.println("不及格");
        }
        else if(student_num >= 60 && student_num <= 70)
        {
            System.out.println("及格");
        }
        else if(student_num > 70 && student_num <= 80)
        {
            System.out.println("中");
        }
        else if(student_num > 80 && student_num <= 90)
        {
            System.out.println("良");
        }
        else if(student_num > 90 && student_num <= 100)
        {
            System.out.println("优");
        }
        else if(student_num > 0 || student_num <= 100)
        {
            System.out.println("成绩输入错误");
        }
    }

}