Why are we using virtual functions in C++? What is the usage of attack function in virtual function? Can anyone explain me?

Question

Because it is the new concept for me in c++..so for it didn't learn about it...

Answer 1

By defining attack function virtual you telling complier to call not the Enemy member function attack(), but attack() of the specific derived class (Monster or Ninja). Otherwise it'll call Enemy attack function both times because we have pointers only on the Enemy object.