Main1.java

Main1.java

@@ -0,0 +1,35 @@
+package com.company;
+import java.util.*;
+import java.lang.Math;
+public class Main {
+
+    public static void main(String[] args) {
+
+        Scanner function= new Scanner(System.in);
+        String a=function.nextLine();
+        if(a.equals("sin")||a.equals("cos")||a.equals("tan")){
+            Scanner radian= new Scanner(System.in);
+            double b=radian.nextDouble();
+        }
+        else{
+            Double.parseDouble(a);
+            Scanner sc= new Scanner(System.in);
+            String b=sc.nextLine();
+            Scanner sc1= new Scanner(System.in);
+            double c=sc1.nextDouble();
+            if(b.equals("^"))
+                double d=zhishu.zhishu(a,c);
+            if(b.equals("log"))
+                double d=fengsj1.duishu(a,c);
+            if(b.equals("+"))
+                double d=Jiajianchengchu.jia(a,c);
+            if(b.equals("-"))
+                double d=Jiajianchengchu.jian(a,c);
+            if(b.equals("*"))
+                double d=Jiajianchengchu.cheng(a,c);
+            if(b.equals("/"))
+                double d=Jiajianchengchu.chu(a,c);
+            System.out.println(d);
+        }
+    }
+}

jiajianchengchu.java

@@ -0,0 +1,24 @@
+class Jiajianchengchu
+{
+    public double jia(double c,double b)
+
+    {
+        return c+b;
+    }
+
+    public double jian(double b,double t)
+
+    {
+        return b-t;
+    }
+    public double cheng(double y,double u)
+    {
+        return y*u;
+
+    }
+    public double chu(double i,double k)
+    {
+        if(k!=0)
+            return i/k;
+    }
+}