Is there a cross-platform header in the standard library that provides access to the current time?

Probably a stupid question, but I couldn't find anything searching...

Is there a standard header that allows me to fetch the current time? Otherwise is there so开发者_JAVA技巧me cross-platform alternative?

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What's wrong with <ctime> ?! It's standard, even MSDN admits:

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time.h, and the time function.

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use boost date_time. http://www.boost.org/doc/libs/1_40_0/doc/html/date_time/posix_time.html.