Функции и циклы

#include <iostream>
#include <Windows.h>
using namespace std;

int EuclidsAlgorithm(int m, int n);
float Count(float a, int n);

int EuclidsAlgorithm(int m, int n)
{
    int r;
    while (n != 0)
    {
        r = m % n;
        m = n;
        n = r;
    }
    return m;
}

float Count(float a, int n)
{
    float Sum = 1 / a;
    for (int i = 2; i < 2*n; i+=2)
    {
        Sum += 1 / pow(a, i);
    }
    return Sum;
}

int main()
{
    SetConsoleCP(1251);
    SetConsoleOutputCP(1251);
    int m1, n1, m, n, result;
    float a;
    cout << "Введите два числа больших нуля" << endl;
    cout << "1 число: ";
    cin >> m;
    cout << "2 Число: ";
    cin >> n;
    m1 = m, n1 = n;
    result = EuclidsAlgorithm(m, n);
    cout << "НОД(" << m1 << "," << n1 << ") = " << result << endl;
    cout << "НОК(" << m1 << "," << n1 << ") = " << (m1*n1) / result << endl;
    cout << "a: ";
    cin >> a;
    cout << "n: ";
    cin >> n;
    cout << Count(a, n) << endl;
}