import java.util.Scanner;
// 输入10位学生的成绩,并且判断他们的成绩是哪个等级,其中90-100是A级,80-89是B级,70-79是C级,60-69是D级,60分以下E级
public class App1 {
public static void main(String[] args) {
double[] scores = new double[10];
Scanner scanner = new Scanner(System.in);
// 读取键盘输入并且赋值给scores数组元素
for (int i = 0; i < 10; i++) {
System.out.println("请输入第" + i + "位学生的成绩");
scores[i] = scanner.nextDouble();
}
for (int j = 0; j < 10; j++) {
double temp = scores[j];
if (temp >= 90 && temp <= 100) {
System.out.println(j + "是A");
}
else if (temp >= 80 && temp < 90) {
System.out.println(j + "是B");
}
else if (temp >= 70 && temp < 80) {
System.out.println(j + "是C");
}
else if (temp >= 60 && temp < 70) {
System.out.println(j + "是D");
}
else {
System.out.println(j + "是E");
}
}
}
}