Hacktoberfest2021/inheritance.cpp at main · Hosh-Mohammad/Hacktoberfest2021 · GitHub

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#include <iostream>
using namespace std;

class Triangle{
    public:
        void triangle(){
            cout<<"I am a triangle\n";
        }
};

class Isosceles : public Triangle{
    public:
        void isosceles(){
            cout<<"I am an isosceles triangle\n";
        }
};

class Equilateral : public Isosceles{
    public:
    void equilateral(){
        cout << "I am an equilateral triangle" << endl;
    }

};

int main(){

    Equilateral*eqr ;
    Equilateral obj_E;

    Isosceles*isr ;
    Isosceles obj_I;

    Triangle*tri ;
    Triangle obj_T;

    eqr = &obj_E;
    eqr->equilateral();

    isr = &obj_I;
    isr->isosceles();

    tri = &obj_T;
    tri->triangle();

    return 0;
}