Lab 6, part 2

#include <iostream>
using namespace std;

void Sums(int, int&, int&, int&);

int main(){
    int N, o1 = 0, o2 = 0, o3 = 0;
    char again = 'y';

    while (again == 'y' || again == 'Y'){
        cout << "Please input a number and i calculate 3 sums: ";
        cin >> N;

        Sums(N, o1, o2, o3);

        cout << "1 to N is : " << o1
            << "\nN+23 to N+200 is: " << o2
            << "\n2N to 5n is: " << o3 << endl << endl;

        cout << " Do you want to continue (y|Y)?: ";
        cin >> again;
    }
}

void Sums(int in, int& _1_N, int& n23_100, int& _2n_5n){
    _1_N = 0, n23_100 = 0, _2n_5n = 0; //reinitialize
    int n23 = (in + 23), n100 = (in + 100), N2 = (in*2), N5= (in*5);

    for (int ctr = 1; ctr <= in; ctr++)
        _1_N += ctr;

    for (int ctr2 = n23; ctr2 <= n100; ctr2++)
        n23_100 += ctr2;

    for (int ctr3 = N2; ctr3 <= N5; ctr3++)
        _2n_5n += ctr3;
}