Virtual Functions in C++ – Hacker Rank Solution | HackerRank Programming Solutions | HackerRank C++ Solutions

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C++ Prorgramming Solutions

Hello Programmers/Coders, Today we are going to share solutions of Programming problems of HackerRank of Programming Language C++ . At Each Problem with Successful submission with all Test Cases Passed, you will get an score or marks. And after solving maximum problems, you will be getting stars. This will highlight you profile to the recruiters.

In this post, you will find the solution for Virtual Functions in C++-HackerRank Problem. We are providing the correct and tested solutions of coding problems present on HackerRank. If you are not able to solve any problem, then you can take help from our Blog/website.

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Introduction To C++

C++ is a general-purpose programming language that was developed as an enhancement of the C language to include object-oriented paradigm. It is an imperative and a compiled language. 

C++ is a middle-level language rendering it the advantage of programming low-level (drivers, kernels) and even higher-level applications (games, GUI, desktop apps etc.). The basic syntax and code structure of both C and C++ are the same. 

C++ programming language was developed in 1980 by Bjarne Stroustrup at bell laboratories of AT&T (American Telephone & Telegraph), located in U.S.A. Bjarne Stroustrup is known as the founder of C++ language.

Virtual Functions in C++ – Hacker Rank Solution

Problem

This problem is to get you familiar with virtual functions. Create three classes Person, Professor and Student. The class Person should have data members name and age. The classes Professor and Student should inherit from the class Person.
The class Professor should have two integer members: publications and cur_id. There will be two member functions: getdata and putdata. The function getdata should get the input from the user: the name, age and publications of the professor. The function putdata should print the name, age, publications and the cur_id of the professor.

The class Student should have two data members: marks, which is an array of size 6 and cur_id. It has two member functions: getdata and putdata. The function getdata should get the input from the user: the name, age, and the marks of the student in 6 subjects. The function putdata should print the name, age, sum of the marks and the cur_id of the student.

For each object being created of the Professor or the Student class, sequential id’s should be assigned to them starting from 1.

Solve this problem using virtual functions, constructors and static variables. You can create more data members if you want.
Note: Expand the main function to look at how the input is being handled.

Input Format :

The first line of input contains the number of objects that are being created. If the first line of input for each object is 1, it means that the object being created is of the Professor class, you will have to input the name, age and publications of the professor.

If the first line of input for each object is 2, it means that the object is of the Student class, you will have to input the name, age and the marks of the student in 6 subjects.

Constraints :

1<= len_name <= 100, where len_name is the length of the name.1<= age <= 801<= publications <= 10000<= marks <= 100, where marks is the marks of the student in each subject.

Output Format :

There are two types of output depending on the object.If the object is of type Professor, print the space separated name, age, publications and id on a new line.
If the object is of the Student class, print the space separated name, age, the sum of the marks in 6 subjects and id on a new line.

Sample Input :

4
1
Walter 56 99
2
Jesse 18 50 48 97 76 34 98
2
Pinkman 22 10 12 0 18 45 50
1
White 58 87

Sample Output :

Walter 56 99 1
Jesse 18 403 1
Pinkman 22 135 2
White 58 87 2
Virtual Functions in C++ – Hacker Rank Solution
#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
/*Enter your code hear */
class Person
{
    protected:
      int age;
      string name;
    public:
          virtual void getdata(){};
          virtual void putdata(){};
};
class Professor : public Person
{
    int publication;
    static int id1;
      public:
       void getdata()
       {
           cin>>name;
           cin>>age;
           cin>>publication;
       }
       void putdata()
       {
          cout<<name<<" "<<age<<" "<<publication<<" "<<id1<<endl;
          id1++;
       }
};
int Professor::id1=1;
class Student : public Person
{
    int marks[6];
     static int id2;
  public:
      int sum=0;
   void getdata()
   {
       cin>>name;
       cin>>age;
       for(int i=0;i<=5;i++)
       {
          cin>>marks[i];
          sum=sum+marks[i];
       }
   }
   void putdata()
   {
      cout<<name<<" "<<age<<" "<<sum<<" "<<id2<<endl;
      id2++;
   }
};

int Student::id2=1;

/*--------End Hacker Rank Solution--------*/

int main()
{

    int n, val;
    cin>>n; //The number of objects that is going to be created.
    Person *per[n];

    for(int i = 0;i < n;i++)
    {

        cin>>val;
        if(val == 1)
        {
            // If val is 1 current object is of type Professor
            per[i] = new Professor;

        }
        else per[i] = new Student; // Else the current object is of type Student

        per[i]->getdata(); // Get the data from the user.

    }

    for(int i=0;i<n;i++)
        per[i]->putdata(); // Print the required output for each object.

    return 0;

}

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