public class HelloWorld {
    public static void main(String[] args) {
  char today = '日';
  switch (today) {
      case '一':
      case '三':
      case '五':
         System.out.println("吃包子");
         break;
      case '二':
      case '四':
      case '六':
        System.out.println("吃油条");
        break;
     case '日':
        System.out.println("吃主席套餐");
        break;
  }
    }
}