rounding c++

#include <iostream>
using namespace std;

int main() {
    double x;
    cin >> x;

    if(x == 0.0) {
        cout << "0 0 0";
    }
    else {
        int floor = int(x);

        double decimal = x - double(floor);
        cout << floor << " ";

        //Integer number
        if(x == double(floor))
            cout << floor << " ";
        else
            cout << floor+1 << " ";

        //Rounding
        if (decimal >= 0.5)
            cout << floor +1;
        else
            cout << floor;
    }
    cout << endl;
    return 0;
}