10. Clock - part 2

#include <iostream>

using namespace std;

int main() {
    for (int h = 0; h < 24; h++) {
        for (int m = 0; m < 60; m++) {
            for (int s = 0; s < 60; s++) {
                cout << h << " : " << m << " : " << s << endl;
            }
        }
    }
    return 0;
}