Vitaly Pavlenko / Prime or composite?

#include <iostream>

using namespace std;

int main() {
    int n;
    cin >> n;
    int i;
    for (i = 2; i <= n; ++i) {
        bool isPrime = true;
        int j;
        for (j = 2; j < i; ++j)
            if (i % j == 0)
                isPrime = false;
        if (isPrime)
            cout << i << " is prime" << endl;
        else
            cout << i << " is composite" << endl;
    }
    return 0;
}