From ef8c6376604e33c29713870468ee064b33777d13 Mon Sep 17 00:00:00 2001
From: gakki husband <1479466759@qq.com>
Date: Thu, 6 Aug 2020 15:12:01 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AF=B9=E6=95=B0=E8=BF=90=E7=AE=97=E5=AE=8C?=
 =?UTF-8?q?=E6=88=90?=
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---
 Calculator.java | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 Calculator.java

diff --git a/Calculator.java b/Calculator.java
new file mode 100644
index 0000000..65e1573
--- /dev/null
+++ b/Calculator.java
@@ -0,0 +1,46 @@
+
+package cn.edu.gxu;
+
+import java.util.Scanner;
+
+
+public class Calculator {
+    public static void main(String[] args) 
+    {
+        Scanner sc=new Scanner(System.in);
+        double result=1.0;
+        String Command=sc.nextLine();
+        String parameters=sc.nextLine();
+        if(Command.equals("0"))
+            result=Calculator.Log(parameters);
+//        else if(Command.equals("1"))
+//            result=Calculator.ex(parameters);
+//        else if(Command.equals("2"))
+//            result=Calculator.jjcc(parameters);
+//        else
+//            result=Calculator.sin(parameters);
+        System.out.println(result);
+        
+    }
+    public static double Log(String s)
+    {
+        String[] parameters=new String[2];
+        parameters=s.split(" ");//用空格切分传过来的两个数字
+        float a=Float.parseFloat(parameters[0]);
+        float b=Float.parseFloat(parameters[1]);
+        double result=Math.log(b)/Math.log(a);  //log 都是用e为底，还要用个换底公式OvO
+        return result;
+    }
+    public static double sin()
+    {
+        
+    }
+    public static double jjcc()//加减乘除哈哈
+    {
+        
+    }
+    public static double ex()//e的幂
+    {
+        
+    }
+}