override_right.cpp

#include <iostream>
using namespace std;

class Base {
public:
    // user wants to override this in
    // the derived class
    virtual void func()
    {
        cout << "I am in base" << endl;
    }
};

// override.cpp:20:22: error: non-virtual member function marked 'override' hides virtual member function
//    void func(int a) override
                     ^
// override.cpp:9:18: note: hidden overloaded virtual function 'Base::func' declared here: different number of parameters (0 vs 1)
//    virtual void func()
class derived : public Base {
public:
    // did a silly mistake by putting
    // an argument "int a"
    void func(int a) override
    {
        cout << "I am in derived class" << endl;
    }
};