#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 << "On a 24-hour clock, the current hour is " << hour << ".\n";
    cout << "On a 12-hour clock, the current hour is ";

    if (hour == 0) {
        cout << 12;          // midnight
    } else if (hour <= 12) {
        cout << hour;        // before and including noon
    } else {
        cout << hour - 12;   // after noon
    }

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

    cout << "\n";

    //-------------------------------------------------------------------
    // Add your new code under this horizontal line.
    // Do not attempt to connect your new "if" with the "if"s above.

    if (hour >= 5 && hour < 12) {
        cout << "Good morning!\n";
    } else if (hour >= 12 && hour < 17) {
        cout << "Good afternoon!\n";
    } else {
        cout << "Good evening!\n";
    }

    return EXIT_SUCCESS;
}