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