课后题2 输入一个百分制成绩，输出该成绩所属等级

package practice;

import java.util.Scanner;

public class master {

public static void main(String[] args) {
    // TODO Auto-generated method stub
    Scanner sc=new Scanner(System.in);
    int r=sc.next();
    if(r<60)
    System.out.ptintln("fail");
    else if(r<80)
    System.out.ptintln("pass");
    else if(r<90)
    System.out.ptintln("good");
    else if(r<=100)
    System.out.ptintln("Excellent good");
    }
}