Inheritance Introduction.cpp-HackerRank

Problem-One of the important topics of Object Oriented Programming is Inheritance. Inheritance allows us to define a class in terms of another class, which allows us in the reusability of the code.Check out the code below:

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

The class Triangle has a function called triangle(). Now we create a class derived from the base class Triangle called Isosceles.

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

Now we can create a derived class object and use it to access the functions of the base class.

int main(){
    Isosceles isc;
    isc.isosceles();
    isc.triangle();
}
    return 0;

This code will print:

I am an isosceles triangle
I am a triangle

Now write a function in Isosceles class such that the output is as given below.

Sample Output

I am an isosceles triangle
In an isosceles triangle two sides are equal
I am a triangle

Solution-

#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";

        }

        void description()

        {

            cout<<"In an isosceles triangle two sides are equal"<<endl;

        }

};

int main()

{

    Isosceles isc;

    isc.isosceles();

    isc.description();

    isc.triangle();

    return 0;

}

Link to the problem:-

https://www.hackerrank.com/challenges/inheritance-introduction/problem

Result!