#include <iostream>
 
    using namespace std;
 
    class Father {
        public:
            void start () {
                this->init();
            };
 
            virtual void init () {
                cout << "I'm the father" << endl;
            };
    };
 
    class Child: public Father {
        void init () override {
            cout << "I'm the child" << endl;
        };
    };
 
    int main (int argc, char** argv) {
        Child child;
        child.start();
    }

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