hw5_35.java

JAVA 2面向对象程序设计(习题参考答案1-8).rar

import java.io.*;
public class hw5_35
{
   public static void main (String args[])throws IOException
   {
      int n;
      String str;
      BufferedReader buf;      
      buf = new BufferedReader(new InputStreamReader(System.in));
      System.out.println("请输入学生的成绩");
      str = buf.readLine();     
      n= Integer.parseInt(str);      
      if ((0<=n)&(n<=59))
         System.out.println("此学生等级为E");          
      if ((60<=n)&(n<=69))
         System.out.println("此学生等级为D");
      if ((70<=n)&(n<=79))
         System.out.println("此学生等级为C");
      if ((80<=n)&(n<=89))
         System.out.println("此学生等级为B");
      if ((90<=n)&(n<=100))          
         System.out.println("此学生等级为A");         
   }
}