struct tm {
        int     tm_sec;         /* seconds after the minute [0-60] */
        int     tm_min;         /* minutes after the hour [0-59] */
        int     tm_hour;        /* hours since midnight [0-23] */
        int     tm_mday;        /* day of the month [1-31] */
        int     tm_mon;         /* months since January [0-11] */
        int     tm_year;        /* years since 1900 */
        int     tm_wday;        /* days since Sunday [0-6] */
        int     tm_yday;        /* days since January 1 [0-365] */
        int     tm_isdst;       /* Daylight Savings Time flag */
        long    tm_gmtoff;      /* offset from CUT in seconds */
        char    *tm_zone;       /* timezone abbreviation */
};

#include <stdio.h>
#include <time.h>

int main(){
  time_t rawtime;
  struct tm * timeinfo;

  time ( &rawtime );  //accepts a pointer
  timeinfo = localtime ( &rawtime );

  printf("It's currently %d:%d:%d", timeinfo->tm_hour, timeinfo->tm_min, timeinfo->tm_sec);
}