/* a sample program that shows the use of mktime() */
#include <stdio.h>
#include <time.h>

int main() {
    struct tm t;
    time_t t_of_day;
 
    t.tm_year = 1999-1900;
    t.tm_mon = 6;
    t.tm_mday = 12;
    t.tm_hour = 2;
    t.tm_min = 30;
    t.tm_sec = 1;
    t.tm_isdst = 0;
    t_of_day = mktime(&t);
    printf(ctime(&t_of_day));

}