新学期学习Java，今天写的输入成绩的代码，有一定的容错能力，开心#新手import java.util.Scanner;public class TestGrades { public static void main(String[] args) { int flag=0; double score; do { System.out.println("请输入你的成绩(0-100)："); Scanner imput = new Scanner(System.in); if(imput.hasNextDouble()) { score=imput.nextDouble(); if(score<=100 & score>=90) { System.out.println("优秀"); } else if(score<90 & score>=80) { System.out.println("良好"); } else if(score<80 & score>=70) { System.out.println("中等"); } else if(score<70 & score>=60) { System.out.println("及格"); } else if(score<60 & score>=0){ System.out.println("不及格"); }else { System.out.println("输入的信息错误"); flag=1; } }else { System.out.println("输入的格式错误"); flag=1; } }while(flag!=0); }}