public class HelloWorld {

    public static void main(String[] args) {

char today='日';

switch(today){

    case 1:

    case 3:

    case 5:

        System.out.println("吃包子");

    case 2:

    case 4:

    case 6:

        System.out.println("吃油条");

    default:

    System.out.println("吃主席套餐");

}