cout or printf which of the two has a faster execution speed C++?

Question

I have been coding in C++ for a long time. I always wondered which has a faster execution speed printf or cout?

Situation: I am designing a

Answer 1

The reason C++ cout is slow is the default sync with stdio.

Try executing the following to deactivate this issue.

ios_base::sync_with_stdio(false)

http://www.cplusplus.com/reference/iostream/ios_base/sync_with_stdio/

http://msdn.microsoft.com/es-es/library/7yxhba01.aspx