#include <iostream>
#include <cstdlib>
#include <ctime>    //for the functions time and localtime
using namespace std;

int main()
{
        //Get the current hour of the day (0 to 23 inclusive).
        time_t t {time(nullptr)};
        tm *p {localtime(&t)};
        int hour {p->tm_hour};

	cout << "The current (24-hour) hour is " << hour << ".\n"
	     << "The current (12-hour) hour is " << hour % 12 << " ";

	if (hour < 12) {
		cout << "a.m.";
	} else {
		cout << "p.m.";
	}

	cout << "\n";

	//-------------------------------------------------------
	
	if (hour < 12) {
		cout << "Good morning\n";
	} else if (hour < 12 + 6) {
	        cout << "Good afternoon\n";
	} else {
	        cout << "Good evening\n";
	}

        return EXIT_SUCCESS;
}