How to prevent a method from being overridden in derived class? [duplicate]

Answer 1

well if you want to keep it public, dont declare it virtual.

EDIT: Srikanth commented wondering about overriding a private member function in a derived class.

class A
{
public:
    virtual ~A(){};
    void test()
    {
        foo();
    };
private:
    virtual void foo()
    {
        std::cout << "A";   
    };
};


class B : public A
{
public:
    virtual void foo()
    {
        std::cout << "B";   
    };
};


void test()
{
    B b;
    A& a = b;

    a.test(); // this calls the derived B::foo()

    return 0;
}`