Linux 时间获取函数-C语言

#include <stdio.h>
#include <string.h>
#include <time.h>

int main(int argc,char **argv)
{
time_t time_now;
struct tm *curr_time = NULL;
 char strtime[20];
memset(strtime,0x00,sizeof(strtime));
time(&time_now);    //同time_now = time(NULL);
printf("time_now:[%ld]\n",time_now);

curr_time = gmtime(&time_now);
printf("gmtime[%02d:%02d:%02d]\n",curr_time->tm_hour, curr_time->tm_min, curr_time->tm_sec);

curr_time = localtime(&time_now);
printf("localtime[%d.%02d.%02d %02d:%02d:%02d]\n",(1900 + curr_time->tm_year),(1 + curr_time->tm_mon),curr_time->tm_mday,curr_time->tm_hour,curr_time->tm_min,curr_time->tm_sec);

strftime(strtime, 100, "20%y%m%d%H%M%S", localtime(&time_now));
printf("strtime[%s]\n",strtime);

return 0;
}

执行结果

{17-11-03 10:50}momo:~/myfile/mydev/cc momo% a.out

time_now:[1509677456]

gmtime[02:50:56]

localtime[2017.11.03 10:50:56]

strtime[20171103105056]