time

 

#include <stdio.h>
#include <time.h>
#include <sys/time.h>

int main()
{
 struct timeval tv;
 struct tm* tm;
 time_t now;

 gettimeofday(&tv, NULL);
 now = time(NULL);

 tm = localtime(&now);
 printf("%d, %d\n", (int)tv.tv_sec, (int)now);
 
 printf("%d-%d-%d %d:%d:%d\n",1900+tm->tm_year, tm->tm_mon, tm->tm_mday,
                              tm->tm_hour, tm->tm_min, tm->tm_sec);
 return 0;
}


 

在不用设置时区的情况下gettimeofday和time是一样的...

localtime将time_t转换了struct tm结构...

对于结构体可以man gettimeofday   localtime