升压微秒
升压微秒
提问于 2014-05-19 22:15:55
我正在做以下工作
using namespace boost::posix_time;
ptime epoch = time_from_string("1970-01-01 00:00:00.000");
ptime other = time_from_string("2011-08-09 17:27:00.000.000");
time_duration const diff = other - epoch;
long long ms = diff.total_microseconds();
cout<<"diff is"<<ms<<endl;我得到的回声是1312910820000000
然后，当我将另一个页面更改为
ptime other = time_from_string("2011-08-09 17:27:00.000.100");我也有同样的回声，为什么？
回答 1
Stack Overflow用户
回答已采纳
发布于 2014-05-19 22:26:11
格式不正确，您有太多的.分隔符：住在Coliru
#include <iostream>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/date_time/posix_time/posix_time_io.hpp>
int main()
{
using namespace boost::posix_time;
ptime epoch = from_time_t(0);
ptime other = time_from_string("2011-08-09 17:27:00.000000");
std::cout << "diff is " << (other - epoch).total_microseconds() << std::endl;
other = time_from_string("2011-08-09 17:27:00.00001");
std::cout << "diff is " << (other - epoch).total_microseconds() << std::endl;
}打印
diff is 1312910820000000
diff is 1312910820000010页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/23748075
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