Algorithm
Problem Name:
In this HackerRank Functions in C++ programming problem solution,
A class defines a blueprint for an object. We use the same syntax to declare objects of a class as we use to declare variables of other basic types. For example:
Box box1; // Declares variable box1 of type Box
Box box2; // Declare variable box2 of type Box
Kristen is a contender for valedictorian of her high school. She wants to know how many students (if any) have scored higher than her in the 5 exams given during this semester. Create a class named Student with the following specifications:
- An instance variable named scoresto hold a student's 5 exam scores.
- A void input() function that reads 5 integers and saves them to scores .
- An int calculateTotalScore() function that returns the sum of the student's scores.
Constraints
1 <= n <= 100
0 <= examscore <= 50
Sample Input
The first line contains n,, the number of students in Kristen's class. The n subsequent lines contain each student's 5 exam grades for this semester.
3
30 40 45 10 10
40 40 40 10 10
50 20 30 10 10
Sample Output
1
Code Examples
#1 Code Example with C++ Programming
Code -
C++ Programming
#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <cassert>
using namespace std;
class Student{
private:
int sum = 0;
public:
void input(){
for(int i = 0, a; i < 5; i++){
cin >> a;
sum += a;
}
}
int calculateTotalScore(){
return sum;
}
};
int main(void)
{
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[0].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;
}
Input
Output