Add project files.

Base.cpp

@@ -0,0 +1,96 @@
+/*
+    Base.cpp
+
+    Investigation of virtual methods and overriding
+*/
+
+#include <string>
+#include <cassert>
+
+class Base {
+public:
+    std::string m1() const { return "Base::m1()"; }
+    virtual std::string m2() const { return "Base::m2()"; }
+};
+
+class Derived : public Base {
+public:
+    std::string m1() const { return "Derived::m1()"; }
+    std::string m2() const { return "Derived::m2()"; }
+};
+
+std::string m1BValue(Base b) {
+    return b.m1();
+}
+
+std::string m2BValue(Base b) {
+    return b.m2();
+}
+
+std::string m1BPtr(Base* pb) {
+    return pb->m1();
+}
+
+std::string m2BPtr(Base* pb) {
+    return pb->m2();
+}
+
+std::string m1BRef(Base& b) {
+    return b.m1();
+}
+
+std::string m2BRef(Base& b) {
+    return b.m2();
+}
+
+int main() {
+
+    {
+        Base b;
+
+        Base* pb = &b;
+
+        Base& rb = b;
+
+        assert(m1BValue(b) == "Base::m1()");
+        assert(m2BValue(b) == "Base::m2()");
+
+        assert(m1BPtr(pb) == "Base::m1()");
+        assert(m2BPtr(pb) == "Base::m2()");
+
+        assert(m1BRef(rb) == "Base::m1()");
+        assert(m2BRef(rb) == "Base::m2()");
+    }
+
+    {
+        Derived d;
+
+        Base* pb = &d;
+
+        Base& rb = d;
+
+        assert(m1BValue(d) == "Base::m1()");
+        assert(m2BValue(d) == "Base::m2()");
+
+        assert(m1BPtr(pb) == "Base::m1()");
+        assert(m2BPtr(pb) == "Derived::m2()");
+
+        assert(m1BRef(rb) == "Base::m1()");
+        assert(m2BRef(rb) == "Derived::m2()");
+
+        Derived* pd = &d;
+
+        Derived& rd = d;
+
+        assert(m1BValue(d) == "Base::m1()");
+        assert(m2BValue(d) == "Base::m2()");
+
+        assert(m1BPtr(pd) == "Base::m1()");
+        assert(m2BPtr(pd) == "Derived::m2()");
+
+        assert(m1BRef(rd) == "Base::m1()");
+        assert(m2BRef(rd) == "Derived::m2()");
+    }
+
+    return 0;
+}