如何利用C語言來獲取當地時間和UTC時間 (設當地時間是北京時間)
阿新 • • 發佈:2019-02-08
#include <stdio.h> #include <time.h> int main(){ time_t t = time(NULL); tm *tp = localtime(&t); // 北京時間 printf("%d/%d/%d\n", tp->tm_mon+1, tp->tm_mday, tp->tm_year + 1900); printf("%d:%d:%d\n", tp->tm_hour, tp->tm_min, tp->tm_sec); return 0;}
#include <stdio.h> #include <time.h> int main(){ time_t t = time(NULL); // UTC秒數 tm *tp = localtime(&t); // 北京時間 printf("%d/%d/%d\n", tp->tm_mon+1, tp->tm_mday, tp->tm_year + 1900); printf("%d:%d:%d\n", tp->tm_hour, tp->tm_min, tp->tm_sec); // UTC今天秒數 int second1 = t % (24 * 60 * 60); printf("%d\n" , second1); // 北京時間今天秒數 int second2 = tp->tm_hour * 3600 + tp->tm_min * 60 + tp->tm_sec; printf("%d\n", second2); // UTC時間與北京時間相隔的小時數 printf("%d\n", (second1 - second2) / 3600); // -8 return 0;}
#include <time.h> #include <stdio.h> #include <wtypes.h>int main(int argc, char* argv[]) { SYSTEMTIME stCurTime = {0}; GetSystemTime(&stCurTime); // UTC時間 printf("%d/%d/%d\n", stCurTime.wMonth, stCurTime.wDay, stCurTime.wYear); printf("%d:%d:%d\n", stCurTime.wHour, stCurTime.wMinute, stCurTime.wSecond); printf("----------\n"); GetLocalTime(&stCurTime); // 北京時間 printf("%d/%d/%d\n", stCurTime.wMonth, stCurTime.wDay, stCurTime.wYear); printf("%d:%d:%d\n", stCurTime.wHour, stCurTime.wMinute, stCurTime.wSecond); return 0;}