#include <sys/types.h>
struct tm {
int tm_sec;
int tm_min;
int tm_hour;
int tm_mday;
int tm_mon;
int tm_year;
int tm_wday;
int tm_yday;
int tm_isdst;
long __tm_gmtoff;
const char *__tm_zone;
};
struct timespec {
time_t tv_sec; // Seconds.
long tv_nsec; // Nanoseconds.
};