Comparison between localtime_r and localtime_s

localtime.hpp

#include <ctime>
#include <iostream>

int is_morning_good() {
    const time_t now_seconds = time(NULL);
    struct tm now;
    localtime_r(&now_seconds, &now);
    return (now.tm_hour < 12);
}

int main()
{
    std::cout << is_morning_good();
}

#include <ctime>
#include <iostream>

int is_morning_good() {
    const time_t now_seconds = time(NULL);
    struct tm now;
    localtime_r(&now_seconds, &now);
    return (now.tm_hour < 12);
}

int main()
{
    std::cout << is_morning_good();
}