Improved

Author: sajith

CMakeLists.txt

@@ -24,4 +24,5 @@ set(CMAKE_CXX_STANDARD 20)
 #add_executable(isp_door_better ISP/isp_door_example_better.cpp)
 #add_executable(isp_door_better2 ISP/isp_door_example_better2.cpp)
 #add_executable(isp_device ISP/isp_device_example.cpp)
-add_executable(isp_device_better ISP/isp_device_example_better.cpp)
+#add_executable(isp_device_better ISP/isp_device_example_better.cpp)
+add_executable(isp_multiple_inheritance ISP/isp_multiple_inheritance.cpp)

ISP/isp_multiple_inheritance.cpp

@@ -0,0 +1,61 @@
+//
+// Created by sajith on 4/20/21.
+//
+
+#include <iostream>
+#include <memory>
+
+class A
+{
+public:
+    virtual ~A() = default;
+
+    virtual void foo()
+    {
+        std::cout << "A\n";
+    }
+};
+
+
+class B : public virtual A
+{
+public:
+    void foo()
+    {
+        std::cout << "B\n";
+    }
+};
+
+
+class C : public virtual A
+{
+public:
+    void foo()
+    {
+        std::cout << "C\n";
+    }
+};
+
+
+class D : public B, public C
+{
+public:
+    void foo()
+    {
+        std::cout << "D\n";
+    }
+};
+
+// Diamond problem
+/*
+/\
+\/
+*/
+
+int main()
+{
+    std::unique_ptr<A> p = std::make_unique<D>();
+    p->foo();
+
+    return 0;
+}