问题:根据读入的学生成绩,划分等级!

代码:
1.if-else:

package day;
import java.util.Scanner;
public class Day0204 {

public static void main(String[] args) {
	// TODO Auto-generated method stub
	Scanner sc = new Scanner(System.in);
	
	for(int k = 0 ; k < 5 ; k++) {
		System.out.println("please input student score number:");
		int score = sc.nextInt();
		if(score <= 100) {
			if(score > 90) {
				System.out.println("优秀!");
			}else if(score >= 80){
				System.out.println("良好!");
			}else if(score >= 70) {
				System.out.println("中等!");
			}else if(score >= 60) {
				System.out.println("及格!");
			}else if(score > 0) {
				System.out.println("不及格!");
			}else {
				System.out.println("请正确输入成绩!");
			}	
	}else {
		System.out.println("请正确输入成绩!");
	}
}
}
}

2.Switch方法:

package day;
import java.util.Scanner;
public class Day0205 {

public static void main(String[] args) {
	// TODO Auto-generated method stub
	Scanner sc = new Scanner(System.in);
	for(int k = 0 ; k < 5 ; k++) {
		System.out.println("please input number:");
		int score = sc.nextInt();
		switch(score/10) {
		case 10:
			System.out.print("优秀!");
			break;
		case 9:
			System.out.println("优秀!");
			break;
		case 8:
			System.out.println("良好!");
			break;
		case 7:
			System.out.println("中等!");
			break;
		case 6:
			System.out.println("及格!");
			break;
		default:
			System.out.println("不及格!");
			break;
		}
	}
	
}

}

还有什么好的方法或者代码有什么问题,请在评论区留言,大家一起学习进步哦!