What is the output of the following C++ code using virtual functions and inheritance?
#include <iostream>
using namespace std;
class Base
{
public:
virtual void show() { cout << "Base"; }
};
class Derived : public Base
{
public:
void show() override { cout << "Derived"; }
};
int main()
{
Derived d;
Base* p = &d;
p->show();
return 0;
}
Options
-
A.
Base
-
B.
Derived
-
C.
Compilation error
-
D.
More than one of the above
-
E.
None of the above
Correct Answer (Detailed Explanation is Below)
B.
Derived
Detailed Explanation
Correct Answer: Option BExplanation:The pointer p has type
Base*, but it points to a Derived object. Because
show() is virtual, runtime polymorphism calls
Derived::show(). The output is
Derived.
