摘要：
package shoppingSysterm;import java.util.Scanner;public class leapyear { public static void main(String[] args) { System.out.println("输入要查询的年份:"); Sca 阅读全文
摘要：
//简单的换购小操作package shoppingSysterm;import java.util.Scanner;public class shop { public static void main(String[] args) { System.out.println("请输入消费金额：") 阅读全文