diff --git a/SoftwareDesign/Code/1-2/main.cpp b/SoftwareDesign/Code/1-2/main.cpp
index 7139ad6..7ff7b23 100644
--- a/SoftwareDesign/Code/1-2/main.cpp
+++ b/SoftwareDesign/Code/1-2/main.cpp
@@ -2,8 +2,8 @@
  * @Author: iR
  * @Date: 2022-03-12 14:46:07
  * @LastEditors: iR
- * @LastEditTime: 2022-03-12 17:13:51
- * @FilePath: \Code\1-2a\main.cpp
+ * @LastEditTime: 2022-03-15 07:17:38
+ * @FilePath: \Code\1-2\main.cpp
  * @Description:
  * @custom_string_iR_Mail: Mail: i@iridium.cyou
  * @custom_string_iR_copyright: Copyright (c) ${now_year} by iR, All Rights Reserved.
@@ -17,27 +17,27 @@ int main()
     double data[] = {1, 2, 3, 4, 5, 6};
     Matrix<double> a(3, 2, data);
     std::cout << "a" << std::endl
-              << a.at(0, 0) << " " << a.at(1, 0) << a.at(2, 0) << std::endl
-              << a.at(0, 1) << " " << a.at(1, 1) << a.at(2, 2) << std::endl;
+              << a.at(0, 0) << " " << a.at(1, 0) << " " << a.at(2, 0) << std::endl
+              << a.at(0, 1) << " " << a.at(1, 1) << " " << a.at(2, 1) << std::endl;
     std::cout << "+=" << std::endl;
 
     Matrix<double> b(3, 2, data);
     std::cout << "b" << std::endl
-              << b.at(0, 0) << " " << b.at(1, 0) << b.at(2, 0) << std::endl
-              << b.at(0, 1) << " " << b.at(1, 1) << b.at(2, 2) << std::endl;
+              << b.at(0, 0) << " " << b.at(1, 0) << " " << b.at(2, 0) << std::endl
+              << b.at(0, 1) << " " << b.at(1, 1) << " " << b.at(2, 1) << std::endl;
     std::cout << "Answer" << std::endl;
 
     a += b;
     std::cout << "a" << std::endl
-              << a.at(0, 0) << " " << a.at(1, 0) << a.at(2, 0) << std::endl
-              << a.at(0, 1) << " " << a.at(1, 1) << a.at(2, 2) << std::endl;
+              << a.at(0, 0) << " " << a.at(1, 0) << " " << a.at(2, 0) << std::endl
+              << a.at(0, 1) << " " << a.at(1, 1) << " " << a.at(2, 1) << std::endl;
 
     std::cout << "c=a+b" << std::endl;
     Matrix<double> c = a + b;
     std::cout << "Answer" << std::endl;
     std::cout << "c" << std::endl
-              << c.at(0, 0) << " " << c.at(1, 0) << a.at(2, 0) << std::endl
-              << c.at(0, 1) << " " << c.at(1, 1) << a.at(2, 0) << std::endl;
+              << c.at(0, 0) << " " << c.at(1, 0) << " " << c.at(2, 0) << std::endl
+              << c.at(0, 1) << " " << c.at(1, 1) << " " << c.at(2, 1) << std::endl;
 
     return 0;
 }
\ No newline at end of file
diff --git a/SoftwareDesign/Code/inc/matrix.hpp b/SoftwareDesign/Code/inc/matrix.hpp
index 603469a..4243d8a 100644
--- a/SoftwareDesign/Code/inc/matrix.hpp
+++ b/SoftwareDesign/Code/inc/matrix.hpp
@@ -175,7 +175,7 @@ Matrix<T>::Matrix(int w, int h, const T elements[])
 
         _width = w;
         _height = h;
-        _mat = new Vector<T>;
+        _mat = new Vector<T>(w * h);
         for (int i = 0; i < size; i++)
             _mat->put(i, elements[i]);
     }