摘要： 1 //20150324 练习1 2 import java.util.*; 3 public class exercise { 4 static int a,b; 5 static char[]ch={'+','-','*','/'}; 6 static S... 阅读全文

摘要： 作业代码：import java.util.*;public class exercise { public static void main(String[] args) { double a,b; Scanner in=new Scan... 阅读全文