#include <stdio.h>
#include <time.h>
int main()
{
    time_t tt;
    struct tm *t;
    tt = time(NULL);
    t = localtime(&tt);
    printf("time: %d/%d/%d  %d:%d:%d\n",
           t->tm_year + 1900,
           t->tm_mon,
           t->tm_mday,
           t->tm_hour,
           t->tm_min,
           t->tm_sec);
    return 0;
}