gradelevel.java

针对越来越多的用户喜欢JAVA

import java.io.*;
public class GradeLevel
{
  public static void main(String args[]) throws IOException
  {
    BufferedReader keyin=new BufferedReader(new InputStreamReader(System.in));
    String x;
    int y,n;
    System.out.print("请输入一个成绩（0-100）:");
    x=keyin.readLine();
    y=Integer.parseInt(x);
    n=(99-y)/10+1;
    switch(n)
    {
      case 1:System.out.print("A");break;
      case 2:System.out.print("B");break;
      case 3:System.out.print("C");break;
      case 4:System.out.print("D");break;
      default:System.out.print("不及格");
    }
  }
}