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

Another Stack Overflow question addressed the relative speed of C-style formatted I/O vs. C++ iostreams:

• Why is snprintf faster than ostringstream or is it?

• http://www.fastformat.org/performance.html

Note, however, that the benchmarks discussed were for formatting to memory buffers. I'd guess that if you're actually performing the I/O to a console or file that the relative speed differences would be much smaller due to the I/O taking more of the overall time.