Add inheritance_system_exception.cpp

inheritance_system_exception.cpp

@@ -0,0 +1,46 @@
+#include <exception> // for std::exception
+#include <iostream>
+#include <stdexcept> // for std::runtime_error
+#include <string>
+
+class ArrayException : public std::runtime_error
+{
+public:
+    ArrayException(const std::string &error)
+        : std::runtime_error{error}
+    {
+    }
+    const char *what() const noexcept override // 如果无需要可以不重写
+    {
+        return "数组类专用异常";
+    }
+};
+class IntArray
+{
+private:
+    int m_data[10]{}; // assume array is length 3 for simplicity
+public:
+    int &operator[](int index)
+    {
+        if (index < 0 || index >= 10)
+            throw ArrayException("下标越界");
+        return m_data[index];
+    }
+};
+int main()
+{
+    try
+    {
+        IntArray array{};
+        array[10] = 5;
+    }
+    catch (const ArrayException &exception)
+    {
+        // 根据需要增加其它额外的处理语句
+        std::cerr << exception.what() << "\n";
+    }
+    catch (const std::exception &exception)
+    {
+        std::cerr << exception.what() << "\n";
+    }
+}