Dünya saati time.h c programlama

 Dünya saati time.h c programlama time.h icindeki fonksiyonlar kullanildi.

#include <stdio.h>
/* puts, printf */
#include <time.h>
/* time_t, struct tm, time, gmtime */
#define MSTT (+3)
#define MST (-7)
#define UTC (0)
#define CCT (+8)
int main ()
{
time_t rawtime;
struct tm * ptm;
time ( &rawtime );
ptm = gmtime ( &rawtime );
puts ("Dünya çapında geçerli saat:");
printf ("Phoenix, AZ (U.S.) : %2d:%02d\n",  (ptm->tm_hour+MST)%24, ptm->tm_min);
printf ("istanbul,(TURKEY) : %2d:%02d\n",   (ptm->tm_hour+MSTT)%24, ptm->tm_min);
printf ("Reykjavik (Iceland) : %2d:%02d\n", (ptm->tm_hour+UTC)%24, ptm->tm_min);
printf ("Beijing (China) : %2d:%02d\n",     (ptm->tm_hour+CCT)%24, ptm->tm_min);
return 0; }