In this HackerRank Classes and Objects problem in c++ programming language you need to create a class named Student with the following specifications:

1. An instance variable named score to hold a student's 5 exam scores.
2. A void input() function that reads 5 integers and saves them to scores.
3. An int calculateTotalScore() function that returns the sum of the student's scores.

## HackerRank classes and objects problem solution in c++ programming.

```
#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <cassert>
using namespace std;

// Write your Student class here
class Student {
private:
int scores;
int sum;
public:
Student() : sum(0) {}
int calculateTotalScore() {return sum;}
void input() {
for(int i=0; i<5; i++) {
cin >> scores[i];
sum+=scores[i];
}
}
};

int main() {
int n; // number of students
cin >> n;
Student *s = new Student[n]; // an array of n students

for(int i = 0; i < n; i++){
s[i].input();
}

// calculate kristen's score
int kristen_score = s.calculateTotalScore();

// determine how many students scored higher than kristen
int count = 0;
for(int i = 1; i < n; i++){
int total = s[i].calculateTotalScore();
if(total > kristen_score){
count++;
}
}

// print result
cout << count;

return 0;
}

```

## Second solution

```#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <cassert>
using namespace std;

// Write your Student class here
class Student {
int totalScore = 0;
public:
void input() {
for (int i = 0; i < 5; i++) {
int x;
cin >> x;
totalScore += x;
}
}
int calculateTotalScore() {
}
};

int main() {
int n; // number of students
cin >> n;
Student *s = new Student[n]; // an array of n students

for(int i = 0; i < n; i++){
s[i].input();
}

// calculate kristen's score
int kristen_score = s.calculateTotalScore();

// determine how many students scored higher than kristen
int count = 0;
for(int i = 1; i < n; i++){
int total = s[i].calculateTotalScore();
if(total > kristen_score){
count++;
}
}

// print result
cout << count;

return 0;
}
```