Count Even and Odd Numbers with Modulo Operation in Array using C++

#include <bits/stdc++.h>

using namespace std;

int main() {
    int n;
    cin >> n;
    int parity_counter[2] = {0};
    for (int i = 1; i <= n; i++) {
        parity_counter[i % 2]++;
    }
    cout << "Frequency of Even Numbers: " << parity_counter[0] << '\n';
    cout << "Frequency of Odd Numbers: " << parity_counter[1] << '\n';
    return 0;
}