Hackerrank | 30 days of code | Day 19-Solution in c++| Interfaces-hackerrank-Solution-in-c++

Hackerrank | 30 days of code | Day 19-Solution in c++| Interfaces-hackerrank-Solution-in-c++

https://www.hackerrank.com/challenges/30-interfaces/problem

Day 19 Interfaces Solution in Cpp

#include <iostream>
#include <vector>
#include <cmath>
#include <cstdio>
#include <algorithm>
#include <string>
using namespace std;
class AdvancedArithmetic{
    public:
        virtual int divisorSum(int n)=0;
};
class Calculator : public AdvancedArithmetic {
public:
    int divisorSum(int n) {
        int sum = 0;
            if ( 1 == n ) { 
                return 1; 
            }
            for (int lo = 1, hi = n ; lo < hi ; ++lo) {
                if (n % lo) { continue; }
                sum += lo;
                hi = (n / lo);
                if (hi <= lo) { break; }
                sum += hi;
            }
        
        return sum;
    }
};

int main(){
    int n;
    cin >> n;
    AdvancedArithmetic *myCalculator = new Calculator(); 
    int sum = myCalculator->divisorSum(n);
    cout << "I implemented: AdvancedArithmetic\n" << sum;
    return 0;
}