课堂小测

题目：

 

 源码：

package xiaochengxun;
import java.util.Scanner;
public class chengxu {
public static void main(String[]args) {

try (Scanner sc = new Scanner(System.in)) {
int number=sc.nextInt();
if(number<60)
{
System.out.println("不及格");
}else if(number<70)
{
System.out.println("及格");
}else if(number<80)
{
System.out.println("中");
}else if(number<90)
{
System.out.println("良");
}else if(number<100)
{
System.out.println("优");
}else
{
System.out.println("error");
}
}
}
}

结果：