diff --git a/Arithmetic operations/bitwise.cpp b/Arithmetic operations/bitwise.cpp
new file mode 100644
index 0000000..2edac83
--- /dev/null
+++ b/Arithmetic operations/bitwise.cpp	
@@ -0,0 +1,44 @@
+#include <opencv2/opencv.hpp>
+#include <iostream>
+
+using namespace std;
+using namespace cv;
+
+int main()
+{
+    string path1 = "../img/2.jpg";
+    string path2 = "../img/3.jpg";
+
+    Mat img1 = imread(path1);
+    Mat img2 = imread(path2);
+
+    if (img1.empty() || img2.empty())
+    {
+        cout << "无法读取图片，请检查路径！" << endl;
+        return -1;
+    }
+
+    if (img1.size() != img2.size())
+    {
+        cout << "尺寸不一致，正在自动调整 img2 的尺寸..." << endl;
+        // 将 img2 缩放到与 img1 相同的尺寸
+        resize(img2, img2, img1.size());
+    }
+
+    Mat result;
+// bitwise_and()	按位与操作	掩码操作、图像分割
+// bitwise_or()	按位或操作	图像叠加
+// bitwise_not()	按位取反操作	图像反色
+// bitwise_xor()	按位异或操作	图像差异检测
+    bitwise_and(img1, img2, result);
+
+    imshow("Original Image 1", img1);
+    imshow("Original Image 2", img2);
+    imshow("Multiply Result", result);
+
+    // 等待按键后关闭窗口
+    waitKey(0);
+    destroyAllWindows();
+
+    return 0;
+}
\ No newline at end of file
diff --git a/Arithmetic operations/multiply.cpp b/Arithmetic operations/multiply.cpp
new file mode 100644
index 0000000..58e2422
--- /dev/null
+++ b/Arithmetic operations/multiply.cpp	
@@ -0,0 +1,40 @@
+#include <opencv2/opencv.hpp>
+#include <iostream>
+
+using namespace std;
+using namespace cv;
+
+int main()
+{
+    string path1 = "../img/2.jpg";
+    string path2 = "../img/3.jpg";
+
+    Mat img1 = imread(path1);
+    Mat img2 = imread(path2);
+
+    if (img1.empty() || img2.empty())
+    {
+        cout << "无法读取图片，请检查路径！" << endl;
+        return -1;
+    }
+
+    if (img1.size() != img2.size())
+    {
+        cout << "尺寸不一致，正在自动调整 img2 的尺寸..." << endl;
+        // 将 img2 缩放到与 img1 相同的尺寸
+        resize(img2, img2, img1.size());
+    }
+
+    Mat result;
+    multiply(img1, img2, result);
+
+    imshow("Original Image 1", img1);
+    imshow("Original Image 2", img2);
+    imshow("Multiply Result", result);
+
+    // 等待按键后关闭窗口
+    waitKey(0);
+    destroyAllWindows();
+
+    return 0;
+}
\ No newline at end of file
diff --git a/Arithmetic operations/plus.cpp b/Arithmetic operations/plus.cpp
index cf93cd5..0297b54 100644
--- a/Arithmetic operations/plus.cpp	
+++ b/Arithmetic operations/plus.cpp	
@@ -1,6 +1,6 @@
 // 加法
-# include<opencv2/opencv.hpp>
-# include<iostream>
+#include <opencv2/opencv.hpp>
+#include <iostream>
 
 using namespace std;
 using namespace cv;
@@ -13,18 +13,20 @@ int main()
     Mat img1 = imread(path1);
     Mat img2 = imread(path2);
 
-    if (img1.empty() || img2.empty()) {
+    if (img1.empty() || img2.empty())
+    {
         cout << "无法读取图片，请检查路径！" << endl;
         return -1;
     }
 
-    if (img1.size() != img2.size()) {
+    if (img1.size() != img2.size())
+    {
         cout << "尺寸不一致，正在自动调整 img2 的尺寸..." << endl;
         // 将 img2 缩放到与 img1 相同的尺寸
         resize(img2, img2, img1.size());
     }
-    
-    Mat result ;
+
+    Mat result;
     add(img1, img2, result);
 
     imshow("Original Image 1", img1);
diff --git a/Arithmetic operations/subtract.cpp b/Arithmetic operations/subtract.cpp
index 91dc64e..a937abd 100644
--- a/Arithmetic operations/subtract.cpp	
+++ b/Arithmetic operations/subtract.cpp	
@@ -1,6 +1,6 @@
 // 减法，与加法基本一样，只把add改成了subtract.
-# include<opencv2/opencv.hpp>
-# include<iostream>
+#include <opencv2/opencv.hpp>
+#include <iostream>
 
 using namespace std;
 using namespace cv;
@@ -13,18 +13,20 @@ int main()
     Mat img1 = imread(path1);
     Mat img2 = imread(path2);
 
-    if (img1.empty() || img2.empty()) {
+    if (img1.empty() || img2.empty())
+    {
         cout << "无法读取图片，请检查路径！" << endl;
         return -1;
     }
 
-    if (img1.size() != img2.size()) {
+    if (img1.size() != img2.size())
+    {
         cout << "尺寸不一致，正在自动调整 img2 的尺寸..." << endl;
         // 将 img2 缩放到与 img1 相同的尺寸
         resize(img2, img2, img1.size());
     }
-    
-    Mat result ;
+
+    Mat result;
     subtract(img1, img2, result);
 
     imshow("Original Image 1", img1);