public class Demolata02 {
public static void main(String[] args) {
int score = 120;
if (score>=90 && score <= 100) {
System.out.println("优秀");
} else if (score >=80 && score <90) {
System.out.println("好");
} else if (score>=70 && score < 80) {
System.out.println("良");
} else if (score>=60 && score < 70) {
System.out.println("及格");
} else if (score>=0 && score < 60) {
System.out.println("不及格");
} else {
System.out.println("数据错误");
}
}
}