Find mini positive number with check

#include <iostream>

using namespace std;

int find_min_positive(int[], size_t, size_t &);

int main() {

    int arr[] = { 9, -2, 3, 4, 5, -9, 11, 2, -1 };

    size_t index = 0;

    if (find_min_positive(arr, 9, index) != 0)
        cout << "Minimum positive element in the array is " << find_min_positive(arr, 9, index) << " and its index is " << index << endl;
    else
        cout << "No positive elements in the array!\n";

    return 0;
}

int find_min_positive(int array[], size_t array_size, size_t &array_index) {

    size_t counter = 0;

    for (size_t i = 0; i < array_size; i++)
        if (array[i] > 0) {
            array_index = i;
            counter++;
        }

    if (counter == 0)
        return 0;

    int min = array[array_index];

    for (size_t i = 0; i < array_size; i++)
        if (min > array[i] && array[i] > 0) {
            min = array[i];
            array_index = i;
        }

    return min;
}