Input
Output
#include <iostream> using namespace std; class A { public: virtual void show()=0; }; class B : A { public: void show() { cout << "Derived Class B" <<endl; } }; class C : A { public: void show() { cout << "Derived Class C" <<endl; } }; int main( ) { B b; C c; b.show(); c.show(); return 0; }