分离不同部分

SoftwareDesign/Code/1-1a/main.cpp

@@ -2,8 +2,8 @@
  * @Author: iR
  * @Date: 2022-03-11 20:22:54
  * @LastEditors: iR
- * @LastEditTime: 2022-03-12 12:30:06
+ * @LastEditTime: 2022-03-12 13:35:35
- * @FilePath: \Code\ex01\main.cpp
+ * @FilePath: \Code\1-1a\main.cpp
  * @Description:
  *
  * Copyright (c) 2022 by iR, All Rights Reserved.
@@ -18,6 +18,6 @@ int main()
     Matrix<double> b(2, 2, 5);
     Matrix<double> c = a;
     Matrix<double> d;
-    
+
     return 0;
 }

SoftwareDesign/Code/1-1b/main.cpp

@@ -0,0 +1,24 @@
+/*
+ * @Author: iR
+ * @Date: 2022-03-12 13:36:15
+ * @LastEditors: iR
+ * @LastEditTime: 2022-03-12 13:37:15
+ * @FilePath: \Code\1-1b\main.cpp
+ * @Description: 
+ * 
+ * Copyright (c) 2022 by iR, All Rights Reserved. 
+ */
+#include "../inc/matrix.hpp"
+#include <stdio.h>
+int main()
+{
+    double data[] = {1, 2, 3, 4};
+    Matrix<double> a(2, 2, data);
+    std::cout << a.at(0, 0) << std::endl;
+    a.at(0, 0) = 9;
+    std::cout << a.at(0, 0) << std::endl;
+    const Matrix<double> &ref_a = a; // 只读引用，因此ref_a只能调用以const结尾的成员函数
+    std::cout << ref_a.at(0, 0) << std::endl;
+
+    return 0;
+}