#include #include #include char * daysofweeks[] = { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" }; void print_time(time_t time) { struct tm * date = localtime(&time); if (!date) { fprintf(stderr, "Failure.\n"); } else { printf("%d-%02d-%02d %02d:%02d:%02d (%s, day %d)\n", date->tm_year + 1900, date->tm_mon + 1, date->tm_mday, date->tm_hour, date->tm_min, date->tm_sec, daysofweeks[date->tm_wday], date->tm_yday); } } int main(int argc, char * argv[]) { struct timeval tv; gettimeofday(&tv, NULL); print_time(tv.tv_sec); return 0; }