diff --git a/Gtk4/gtk118_imageviewer/res/MyImage.ui b/Gtk4/gtk118_imageviewer/res/MyImage.ui
index 9efd0aa..a81430f 100644
--- a/Gtk4/gtk118_imageviewer/res/MyImage.ui
+++ b/Gtk4/gtk118_imageviewer/res/MyImage.ui
@@ -32,7 +32,6 @@
         <property name="button">1</property>
         <signal name="drag-begin" handler="drag_start"/>
         <signal name="drag-update" handler="drag_update"/>
-        <signal name="drag-end" handler="drag_end"/>
       </object>
     </child>
   </template>
diff --git a/Gtk4/gtk118_imageviewer/src/MyImage.cpp b/Gtk4/gtk118_imageviewer/src/MyImage.cpp
index 8a3d431..859bb91 100644
--- a/Gtk4/gtk118_imageviewer/src/MyImage.cpp
+++ b/Gtk4/gtk118_imageviewer/src/MyImage.cpp
@@ -50,33 +50,25 @@ static void drag_start(GtkGestureDrag * self,double x,double y,MyImage * image){
 
 static void drag_update(GtkGestureDrag * self,double x,double y,MyImage * image){
     //Move Image
-    if(image->move_count == 5){
         int hadj_value = gtk_adjustment_get_value(image->hadjustment);
         int vadj_value = gtk_adjustment_get_value(image->vadjustment);
-        if(hadj_value - x >= 0 &&  - x <= image->hmax_value){
+        if(hadj_value -x < 0){
+            gtk_adjustment_set_value(image->hadjustment,0);
+        }else if(hadj_value - x > image->hmax_value){
+            gtk_adjustment_set_value(image->hadjustment,image->hmax_value);
+        }
+        else{
             gtk_adjustment_set_value(image->hadjustment,-x/2.0);
         }
-        if(vadj_value - y >= 0 &&  - y <= image->vmax_value){
+
+        if(vadj_value - x < 0){
+            gtk_adjustment_set_value(image->vadjustment,0);
+        }else if(vadj_value - x > image->vmax_value){
+            gtk_adjustment_set_value(image->vadjustment,image->vmax_value);
+        }else{
             gtk_adjustment_set_value(image->vadjustment,-y/2.0);
         }
-        image->move_count = 0;
-    }else{
-        image->move_count++;
-    }
-    
-}
-
-static void drag_end(GtkGestureDrag * self,double x,double y,MyImage * image){
-    //g_print("%f %f\n",x+image->start_x,y+image->start_y);
-    //sleep(1);
-    int hadj_value = gtk_adjustment_get_value(image->hadjustment);
-    int vadj_value = gtk_adjustment_get_value(image->vadjustment);
-    if(hadj_value - x >= 0 &&  - x <= image->hmax_value){
-        gtk_adjustment_set_value(image->hadjustment,-x);
-    }
-    if(vadj_value - y >= 0 &&  - y <= image->vmax_value){
-        gtk_adjustment_set_value(image->vadjustment,-y);
-    }
+        image->move_count = 0; 
 }
 
 static void my_image_dispose(GObject * object){
@@ -255,7 +247,6 @@ static void my_image_class_init(MyImageClass * self_class){
     gtk_widget_class_bind_template_callback(self_class,pressed_cb);
     gtk_widget_class_bind_template_callback(self_class,drag_start);
     gtk_widget_class_bind_template_callback(self_class,drag_update);
-    gtk_widget_class_bind_template_callback(self_class,drag_end);
 }
 
 void my_image_bind_adjustments(MyImage       * self, 
diff --git a/Gtkmm3/gtk119_imageviewer2/.vscode/settings.json b/Gtkmm3/gtk119_imageviewer2/.vscode/settings.json
new file mode 100644
index 0000000..b4d8c35
--- /dev/null
+++ b/Gtkmm3/gtk119_imageviewer2/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+    "C_Cpp.default.configurationProvider": "ms-vscode.cmake-tools"
+}
\ No newline at end of file
diff --git a/Gtkmm3/gtk119_imageviewer2/CMakeLists.txt b/Gtkmm3/gtk119_imageviewer2/CMakeLists.txt
new file mode 100644
index 0000000..f99f4ef
--- /dev/null
+++ b/Gtkmm3/gtk119_imageviewer2/CMakeLists.txt
@@ -0,0 +1,62 @@
+set(CMAKE_CXX_STANDARD 17)
+cmake_minimum_required(VERSION 3.0.0)
+project(gtk117 VERSION 1.0.0)
+
+list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/../../GCR_CMake/macros)
+include(GlibCompileResourcesSupport)
+
+include(CTest)
+enable_testing()
+
+set(CPACK_PROJECT_NAME ${PROJECT_NAME})
+set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})
+
+include(CPack)
+include_directories(.)
+include_directories(..)
+
+find_package (PkgConfig REQUIRED)
+pkg_check_modules (GTKMM3 REQUIRED gtkmm-3.0)
+include_directories (${GTKMM3_INCLUDE_DIRS})
+link_directories (${GTKMM3_LIBRARY_DIRS})
+
+#Compile Resource
+
+# set(RESOURCE_LIST
+#     gnome-fs-directory.png
+#     gnome-fs-regular.png
+#     icons/24x24/actions/view-grid-symbolic.png
+#     icons/24x24/actions/view-list-symbolic.png
+#     icons/48x48/actions/dialog-error.png)
+
+# compile_gresources(RESOURCE_FILE
+#                    XML_OUT
+#                    TYPE EMBED_C
+#                    RESOURCES ${RESOURCE_LIST}
+#                    PREFIX "/org/gtk/daleclack"
+#                    SOURCE_DIR ${PROJECT_SOURCE_DIR}/../default_res)
+                   
+# Add a custom target to the makefile. Now make builds our resource file.
+# It depends on the output RESOURCE_FILE.
+# add_custom_target(resource ALL DEPENDS ${RESOURCE_FILE})
+
+#For win32 platform,use rc resource and .ico icon
+if(WIN32)
+	SET(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)
+	set(app_WINRC ../icon.rc)
+	set_property(SOURCE ../icon.rc APPEND PROPERTY
+        OBJECT_DEPENDS ${PROJECT_SOURCE_DIR}/../icon.ico
+        )
+	add_executable(${PROJECT_NAME} WIN32 ${app_WINRC} src/main.cc src/MyWin.cc)
+else()
+	add_executable(${PROJECT_NAME} src/main.cc src/MyWin.cc)
+
+endif(WIN32)
+
+#Add command to generate .gitignore
+add_custom_command(TARGET ${PROJECT_NAME} 
+                   COMMAND echo \"*\" > ${CMAKE_BINARY_DIR}/.gitignore
+                   COMMAND echo \"**/*\" > ${CMAKE_BINARY_DIR}/.hgignore)
+
+SET (CMAKE_EXTRA_CXX_FLAGS ${GTKMM3_CFLAGS_OTHER})
+target_link_libraries (${PROJECT_NAME} ${GTKMM3_LIBRARIES} -lpthread)
diff --git a/Gtkmm3/gtk119_imageviewer2/src/MyWin.cc b/Gtkmm3/gtk119_imageviewer2/src/MyWin.cc
new file mode 100644
index 0000000..bc8d908
--- /dev/null
+++ b/Gtkmm3/gtk119_imageviewer2/src/MyWin.cc
@@ -0,0 +1,5 @@
+#include "MyWin.hh"
+
+MyWin::MyWin(){
+    
+}
\ No newline at end of file
diff --git a/Gtkmm3/gtk119_imageviewer2/src/MyWin.hh b/Gtkmm3/gtk119_imageviewer2/src/MyWin.hh
new file mode 100644
index 0000000..0208325
--- /dev/null
+++ b/Gtkmm3/gtk119_imageviewer2/src/MyWin.hh
@@ -0,0 +1,17 @@
+#pragma once
+
+#include <gtkmm.h>
+
+class MyWin : public Gtk::Window{
+    public:
+        MyWin();
+    private:
+        //Child widgets
+        Gtk::ScrolledWindow sw;
+        Gtk::Image image;
+        Gtk::Box main_box;
+
+        //Gesture control
+        
+        //Signal Handlers
+};
diff --git a/Gtkmm3/gtk119_imageviewer2/src/main.cc b/Gtkmm3/gtk119_imageviewer2/src/main.cc
new file mode 100644
index 0000000..7e5f2b4
--- /dev/null
+++ b/Gtkmm3/gtk119_imageviewer2/src/main.cc
@@ -0,0 +1,9 @@
+#include "MyWin.hh"
+
+int main(int argc,char ** argv){
+    auto app = Gtk::Application::create(argc,argv,"org.gtk.daleclack");
+
+    MyWin window;
+
+    return app->run(window);
+}
\ No newline at end of file
diff --git a/cpp/algorithms/problem10.cpp b/cpp/algorithms/problem10.cpp
new file mode 100644
index 0000000..930bf99
--- /dev/null
+++ b/cpp/algorithms/problem10.cpp
@@ -0,0 +1,18 @@
+//http://acm.hdu.edu.cn/showproblem.php?pid=2009
+
+#include <cstdio>
+#include <cmath>
+
+int main(){
+    int m;
+    double n;
+    while(scanf("%lf%d",&n,&m)!=EOF){
+        double sum = 0;
+        for(int i=0;i<m;i++){
+            sum += n;
+            n=sqrt(n);
+        }
+        printf("%.2f\n",sum);
+    }
+    return 0;
+}
diff --git a/cpp/algorithms/problem11.cpp b/cpp/algorithms/problem11.cpp
new file mode 100644
index 0000000..705ea65
--- /dev/null
+++ b/cpp/algorithms/problem11.cpp
@@ -0,0 +1,33 @@
+//http://acm.hdu.edu.cn/showproblem.php?pid=2010
+
+#include <cstdio>
+
+int main(){
+    int m,n;
+    bool flag;
+    while(scanf("%d%d",&m,&n)!=EOF){
+        flag = false;
+        if(m>n){
+            int t = m;
+            m = n;
+            n = t;
+        }
+        for(int i=m;i<=n;i++){
+            int x,y,z;
+            x = i/100;
+            y = i%100/10;
+            z = i%10;
+            if(x*x*x + y*y*y + z*z*z == i){
+                if(flag){ printf(" "); }
+                printf("%d",i);
+                flag = true;
+            }
+        }
+        if(!flag){
+            printf("no\n");
+        }else{
+            printf("\n");
+        }
+    }
+    return 0;
+}
diff --git a/cpp/algorithms/problem12.cpp b/cpp/algorithms/problem12.cpp
new file mode 100644
index 0000000..72e0d81
--- /dev/null
+++ b/cpp/algorithms/problem12.cpp
@@ -0,0 +1,19 @@
+//http://acm.hdu.edu.cn/showproblem.php?pid=2011
+
+#include <cstdio>
+#include <cmath>
+
+int main(){
+    int m,n;
+    double sum;
+    scanf("%d",&m);
+    for(int i=0;i<m;i++){
+        scanf("%d",&n);
+        sum=0.0;
+        for(int j=1;j<=n;j++){
+            sum+=1.0/(double)j*pow(-1,j-1);
+        }
+        printf("%.2f\n",sum);
+    }
+    return 0;
+}
diff --git a/cpp/algorithms/problem13.cpp b/cpp/algorithms/problem13.cpp
new file mode 100644
index 0000000..47d8cde
--- /dev/null
+++ b/cpp/algorithms/problem13.cpp
@@ -0,0 +1,34 @@
+//http://acm.hdu.edu.cn/showproblem.php?pid=2012
+
+#include <stdio.h>
+#include <math.h>
+
+int isPrime(int number){
+    int i;
+    for(i=2;i<=sqrt(number);i++){
+        if(number%i==0) return 0;
+    }
+    return 1;
+}
+
+int main(){
+    int x,y,i,flag=1;
+    while(scanf("%d%d",&x,&y)){
+        flag=1;
+        if(x==0 && y==0){break;}
+        if(x>y){
+            int t=x;
+            x=y;
+            y=t;
+        }
+        for(i=x;i<=y;i++){
+            if(!isPrime(i*i+i+41)){
+                flag=0;
+                break;
+            }
+        }
+        if(flag){ printf("OK\n"); }
+        else{ printf("Sorry\n"); }
+    }
+    return 0;
+}
diff --git a/cpp/algorithms/problem7.cpp b/cpp/algorithms/problem7.cpp
new file mode 100644
index 0000000..7433197
--- /dev/null
+++ b/cpp/algorithms/problem7.cpp
@@ -0,0 +1,17 @@
+//http://acm.hdu.edu.cn/showproblem.php?pid=2006
+
+#include <cstdio>
+
+int main(){
+    int i,n,x,sum=1;
+    while(scanf("%d",&n)!=EOF){
+        sum = 1;
+        for(i=0;i<n;i++){
+            scanf("%d",&x);
+            if(x%2==1){
+                sum*=x;
+            }
+        }
+        printf("%d\n",sum);
+    }
+}
diff --git a/cpp/algorithms/problem8.cpp b/cpp/algorithms/problem8.cpp
new file mode 100644
index 0000000..69a4ac0
--- /dev/null
+++ b/cpp/algorithms/problem8.cpp
@@ -0,0 +1,23 @@
+//http://acm.hdu.edu.cn/showproblem.php?pid=2007
+
+#include <cstdio>
+
+int main(){
+    int m=0,n=0,x,y;
+    while(scanf("%d%d",&m,&n)!=EOF){
+        x=0,y=0;
+        if(m > n){
+            int t = m;
+            m = n;
+            n = t;
+        }
+        for(int i=m;i<=n;i++){
+            if(i%2==0){
+                x += i*i;
+            }else{
+                y += i*i*i;
+            }
+        }
+        printf("%d %d\n",x,y);
+    }
+}
diff --git a/cpp/algorithms/problem9.cpp b/cpp/algorithms/problem9.cpp
new file mode 100644
index 0000000..ed5058a
--- /dev/null
+++ b/cpp/algorithms/problem9.cpp
@@ -0,0 +1,20 @@
+//http://acm.hdu.edu.cn/showproblem.php?pid=2008
+
+#include <cstdio>
+
+int main(){
+    int x,y,z,n;
+    while(scanf("%d",&n)){
+        double temp = 0.0;
+        x=0;y=0;z=0;
+        if(n==0) break;
+        for(int i=0 ; i<n ; i++){
+            scanf("%lf",&temp);
+            if(temp<0){ x++; }
+            if(temp>0){ z++; }
+            if(temp==0){ y++; }
+        }
+        printf("%d %d %d\n",x,y,z);
+    }
+    return 0;
+}
diff --git a/gtk4-rs/gtk-rs-menus/.vscode/launch.json b/gtk4-rs/gtk-rs-menus/.vscode/launch.json
new file mode 100644
index 0000000..cb726c1
--- /dev/null
+++ b/gtk4-rs/gtk-rs-menus/.vscode/launch.json
@@ -0,0 +1,47 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug executable 'gtk-rs-menus'",
+            "cargo": {
+                "args": [
+                    "build",
+                    "--bin=gtk-rs-menus",
+                    "--package=gtk-rs-menus",
+                    "--release"
+                ],
+                "filter": {
+                    "name": "gtk-rs-menus",
+                    "kind": "bin"
+                }
+            },
+            "args": [],
+            "cwd": "${workspaceFolder}"
+        },
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug unit tests in executable 'gtk-rs-menus'",
+            "cargo": {
+                "args": [
+                    "test",
+                    "--no-run",
+                    "--bin=gtk-rs-menus",
+                    "--package=gtk-rs-menus",
+                    "--release"
+                ],
+                "filter": {
+                    "name": "gtk-rs-menus",
+                    "kind": "bin"
+                }
+            },
+            "args": [],
+            "cwd": "${workspaceFolder}"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/gtk4-rs/gtk-rs-menus/Cargo.lock b/gtk4-rs/gtk-rs-menus/Cargo.lock
new file mode 100644
index 0000000..aa09737
--- /dev/null
+++ b/gtk4-rs/gtk-rs-menus/Cargo.lock
@@ -0,0 +1,722 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "anyhow"
+version = "1.0.51"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b26702f315f53b6071259e15dd9d64528213b44d61de1ec926eca7715d62203"
+
+[[package]]
+name = "autocfg"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
+
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
+[[package]]
+name = "cairo-rs"
+version = "0.14.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33b5725979db0c586d98abad2193cdb612dd40ef95cd26bd99851bf93b3cb482"
+dependencies = [
+ "bitflags",
+ "cairo-sys-rs",
+ "glib",
+ "libc",
+ "thiserror",
+]
+
+[[package]]
+name = "cairo-sys-rs"
+version = "0.14.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b448b876970834fda82ba3aeaccadbd760206b75388fc5c1b02f1e343b697570"
+dependencies = [
+ "glib-sys",
+ "libc",
+ "system-deps 3.2.0",
+]
+
+[[package]]
+name = "cfg-expr"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b412e83326147c2bb881f8b40edfbf9905b9b8abaebd0e47ca190ba62fda8f0e"
+dependencies = [
+ "smallvec",
+]
+
+[[package]]
+name = "cfg-expr"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "edae0b9625d1fce32f7d64b71784d9b1bf8469ec1a9c417e44aaf16a9cbd7571"
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+ "smallvec",
+]
+
+[[package]]
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+checksum = "e78d4f1cc4ae33bbfc157ed5d5a5ef3bc29227303d595861deb238fcec4e9457"
+
+[[package]]
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+ "memoffset",
+ "rustc_version",
+]
+
+[[package]]
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+ "futures-core",
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+
+[[package]]
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+checksum = "629316e42fe7c2a0b9a65b47d159ceaa5453ab14e8f0a3c5eedbb8cd55b4a445"
+
+[[package]]
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+version = "0.3.18"
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+checksum = "7b808bf53348a36cab739d7e04755909b9fcaaa69b7d7e588b37b6ec62704c97"
+dependencies = [
+ "futures-core",
+ "futures-task",
+ "futures-util",
+]
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+[[package]]
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+version = "0.3.18"
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+[[package]]
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+ "futures-core",
+ "futures-task",
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+ "slab",
+]
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+[[package]]
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+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "534192cb8f01daeb8fab2c8d4baa8f9aae5b7a39130525779f5c2608e235b10f"
+dependencies = [
+ "gdk-pixbuf-sys",
+ "gio",
+ "glib",
+ "libc",
+]
+
+[[package]]
+name = "gdk-pixbuf-sys"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f097c0704201fbc8f69c1762dc58c6947c8bb188b8ed0bc7e65259f1894fe590"
+dependencies = [
+ "gio-sys",
+ "glib-sys",
+ "gobject-sys",
+ "libc",
+ "system-deps 3.2.0",
+]
+
+[[package]]
+name = "gdk4"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f97a162c17214d1bf981af3f683156a0b1667dd1927057c4f0a68513251ecf0f"
+dependencies = [
+ "bitflags",
+ "cairo-rs",
+ "gdk-pixbuf",
+ "gdk4-sys",
+ "gio",
+ "glib",
+ "libc",
+ "pango",
+]
+
+[[package]]
+name = "gdk4-sys"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9498f4e06969fb96a4e4234dfe1d308a3ac6b120b3c6d93e3ec5c77fe88bc6d5"
+dependencies = [
+ "cairo-sys-rs",
+ "gdk-pixbuf-sys",
+ "gio-sys",
+ "glib-sys",
+ "gobject-sys",
+ "graphene-sys",
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diff --git a/gtk4-rs/gtk-rs-menus/Cargo.toml b/gtk4-rs/gtk-rs-menus/Cargo.toml
new file mode 100644
index 0000000..9485518
--- /dev/null
+++ b/gtk4-rs/gtk-rs-menus/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "gtk-rs-menus"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+gtk = { version = "0.3.1", package = "gtk4", features = ["v4_4"] }
\ No newline at end of file
diff --git a/gtk4-rs/gtk-rs-menus/res/menubar.xml b/gtk4-rs/gtk-rs-menus/res/menubar.xml
new file mode 100644
index 0000000..dc03d6c
--- /dev/null
+++ b/gtk4-rs/gtk-rs-menus/res/menubar.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+    <menu id = "menubar">
+        <section>
+            <submenu>
+                <attribute name="label">File</attribute>
+                <item>
+                    <attribute name="label">Exit</attribute>
+                </item>
+            </submenu>
+        </section>
+    </menu>
+</interface>
diff --git a/gtk4-rs/gtk-rs-menus/src/main.rs b/gtk4-rs/gtk-rs-menus/src/main.rs
new file mode 100644
index 0000000..db016ca
--- /dev/null
+++ b/gtk4-rs/gtk-rs-menus/src/main.rs
@@ -0,0 +1,45 @@
+use gtk::prelude::*;
+use gtk::{self,
+    gio::{self}
+};
+
+fn main() {
+    //Create a application
+    let app = gtk::Application::builder()
+                         .application_id("org.gtk.daleclack")
+                         .build();
+
+    app.connect_activate(build_ui);
+
+    app.run();
+}
+
+fn build_ui(app:&gtk::Application){
+    //Create a window
+    let window = gtk::Window::builder()
+                        .application(app)
+                        .title("Gtk-rs menu test")
+                        .icon_name("org.gtk.daleclack")
+                        .build();
+
+    window.set_default_size(800,600);
+
+    //Create menu
+    let builder = gtk::Builder::from_file("./res/menubar.xml");
+    let menu:gio::MenuModel = builder.object("menubar").unwrap();
+
+    //Create menubar
+    let menubar = gtk::PopoverMenuBar::builder()
+                                .menu_model(&menu)
+                                .build();
+
+    menubar.set_halign(gtk::Align::Start);
+    menubar.set_valign(gtk::Align::Start);
+
+    let vbox = gtk::Box::new(gtk::Orientation::Horizontal,5);
+
+    vbox.append(&menubar);
+    window.set_child(Some(&vbox));
+
+    window.present();
+}
diff --git a/rust_test/src/main.rs b/rust_test/src/main.rs
index a2a0092..d0b47f8 100644
--- a/rust_test/src/main.rs
+++ b/rust_test/src/main.rs
@@ -1,3 +1,5 @@
+#[allow(dead_code)]
+
 mod test;
 mod test2;
 mod test3;
diff --git a/rust_test/src/test2.rs b/rust_test/src/test2.rs
index f45a5b4..c87230f 100644
--- a/rust_test/src/test2.rs
+++ b/rust_test/src/test2.rs
@@ -1,3 +1,5 @@
+#[allow(dead_code)]
+
 fn main(){
     let pair = ('a',17);
     println!("{} {}",pair.0,pair.1);
diff --git a/rust_test/src/test3.rs b/rust_test/src/test3.rs
index dbf2b34..394c219 100644
--- a/rust_test/src/test3.rs
+++ b/rust_test/src/test3.rs
@@ -1,10 +1,12 @@
 //Get Current directory(May cause error when handling directory name with chinese)
+#[allow(dead_code)]
 
 fn main(){
-    let mut args = std::env::args();
-    let path = args.nth(0).unwrap();
-    let length = path.len();
-    println!("{}",path);
-    let path1 = &path[0..length-5];
+    let path = std::env::args().nth(0).unwrap();    //The arg[0] is the path of binary
+    
+    let length = path.len();    //Get length to handle the String
+
+    let path1 = &path[0..length-5];        //Remove the binary name
+
     println!("{}",path1);
 }
\ No newline at end of file