linux c 獲取系統當前時區
阿新 • • 發佈:2019-01-05
#include<stdio.h> #include<time.h> int main() { unsigned int timezone = 0; time_t t1, t2 ; struct tm *tm_local, *tm_utc; time(&t1); t2 = t1; printf("t1=%ul,t2=%ul\n", t1, t2); tm_local = localtime(&t1); printf("localtime=%d:%d:%d\n", tm_local->tm_hour, tm_local->tm_min, tm_local->tm_sec); t1 = mktime(tm_local) ; tm_utc = gmtime(&t2); printf("utcutctime=%d:%d:%d\n", tm_utc->tm_hour, tm_utc->tm_min, tm_utc->tm_sec); t2 = mktime(tm_utc); printf("***\n"); printf("t1=%ul\nt2=%ul\n", t1, t2); timezone = (t1 - t2) / 3600; printf("%d\n", timezone); return 0; }