strftime(buf, 64, "%Y-%m-%d %H:%M:%S", local);
std::cout << buf << std::endl;
gmt = gmtime(...&t);//转为格林威治时间
strftime(buf, 64, "%Y-%m-%d %H:%M:%S", gmt);
std::cout << buf << std::endl;...%m-%d %H:%M:%S", &tm_); //将字符串转换为tm时间
tm_.tm_isdst = -1;
t_ = mktime(&tm_); //将tm时间转换为秒时间
t_ +...= 3600; //秒数加3600
tm_ = *localtime(&t_);//输出时间
strftime(buf, 64, "%Y-%m-%d %H:%M:%S", &tm_);...%d-%d %d:%d:%d", &year, &month, &day, &hour, &minute, &second);
tm_.tm_year = year-1900;
