switchexam.java

Java程序设计实用教程源代码 本书源代码按章分别放置在不同的文件夹中,所有程序均在JDK1.6环境下编译运行正常,除了第13章需要建立ODBC数据源之外,其他程序只要有Java运行环境即可直接运行

import java.io.*;
public class SwitchExam {
  public static void main(String args[]) {
    double score;
    int grade = 0;
    String s;
    System.out.println("Please enter your score：");
    try {
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      s = br.readLine();
      score = Double.valueOf(s).doubleValue();
      grade = (int) score / 10;
    }
    catch (IOException e) {
      System.out.println(e.toString());
    }
    switch (grade) {
      case 10:
      case 9:
        System.out.println("优");
        break;
      case 8:
        System.out.println("良");
        break;
      case 7:
        System.out.println("中");
        break;
      case 6:
        System.out.println("及格");
        break;
      case 5:
      case 4:
      case 3:
      case 2:
      case 1:
      case 0:
        System.out.println("差");
        break;
      default:
        System.out.println("非法输入");
    }
  }
}