HackerRank Multi Level Inheritance solution in c++ programming

In this HackerRank Multi-level inheritance problem in c++ programming language, you need to create a class called Equilateral which inherits from Isosceles and should have a function as expected in the output format.

HackerRank Multi-level inheritance problem solution in c++ programming.

#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";
  		}
};

//Write your code here.
class Equilateral : public Isosceles
{
    public:
        void equilateral(){
            cout << "I am an equilateral triangle" << endl;
        }
};

int main(){
  
    Equilateral eqr;
    eqr.equilateral();
    eqr.isosceles();
    eqr.triangle();
    return 0;
}

Second solution in c++14

#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" << endl;
    }
};

   
//Write your code here.
int main(){
  
    Equilateral eqr;
    eqr.equilateral();
    eqr.isosceles();
    eqr.triangle();
    return 0;
}