#include <cmath> #include <cstdio> #include <vector> #include <iostream> #include <algorithm> 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\n";} }; //Write your code here. int main(){ Equilateral eqr; eqr.equilateral(); eqr.isosceles(); eqr.triangle(); return 0; }