Integer division and remainder of an integer number by a nat

#include <iostream>
using namespace std;

int main() {
    int a, b;
    cin >> a >> b;
    int d = a/b;
    int r = a%b;
    if(r < 0) {
        --d;
        r += b;
    }

    cout << d << " " << r << endl;
}