public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
while(true){
System.out.println("输入成绩");
int score = sc.nextInt();
int level = score / 10;
switch(level){
case 10:
case 9:
System.out.println("A等");
break;
case 8:
System.out.println("B等");
break;
case 7:
System.out.println("C等");
break;
case 6:
System.out.println("D等");
break;
case 5:
case 4:
case 3:
case 2:
case 1:
case 0:
System.out.println("E等");
break;
default:
System.out.println("输入有误");
break;
}
}
} |