What will happen if I remove the virtual specifier from the class A?
What will happen if I remove the virtual specifier from the classes A and B?
What will happen if I remove the virtual specifier from the class B?
#include <iostream>
class A {
public:
virtual void call() const
{
std::cout << "A" << std::endl;
}
};
class B : public A {
public:
virtual void call() const override
{
std::cout << "B" << std::endl;
}
};
class C : public B {
public:
void call() const override
{
std::cout << "C" << std::endl;
}
};
int main(int argc, char const *argv[])
{
A* a = new A();
B* b = new B();
C* c = new C();
a->call();
b->call();
c->call();
return 0;
}Let's now play around with a base class that has const and non-const versions. You may want to review what const pointer means
#include <iostream>
class A {
public:
void call()
{
std::cout << "A" << std::endl;
}
virtual void call() const
{
std::cout << "Ac" << std::endl;
}
};
class B : public A {
public:
virtual void call() const final
{
std::cout << "Bc" << std::endl;
}
};
class C : public B {
public:
void call()
{
std::cout << "C" << std::endl;
}
};
int main(int argc, char const *argv[])
{
const A* a = new A();
const A* b = new B();
A* c = new C();
a->call();
b->call();
c->call();
return 0;
}As usual all code for your experiments and slides are in cpp-skill repository.