1 package com.main.cul;
2 import java.util.Scanner;
3 public class Demo {
4 private static double result;
5 public static void main(String[] argv){
6
7 try{
8
9 Scanner in=new Scanner(System.in);
10 System.out.print("请输入数字A：");
11 double numA=in.nextDouble();
12
13 System.out.print("请选择操作+-*/(加减乘除)：");
14 String strOper=in.next();
15 char operate=strOper.charAt(0);
16
17 System.out.print("请输入数字B：");
18 double numB=in.nextDouble();
19
20 switch (operate) {
21 case '+':
22 result =numA+numB;
23 break;
24 case '-':
25 result =numA-numB;
26 break;
27 case '*':
28 result =numA*numB;
29 break;
30 case '/':
31 result =numA/numB;
32 break;
33 }
34
35 System.out.print("结果为"+result);
36
37 }catch (Exception e) {
38 // TODO: handle exception
39 e.printStackTrace();
40 }
41 }
42 }
