Runtime of an process?

[DrJones]

I an trying to determine the runtime of an task.
The taks/function is recursive, and having a hard time to define a timer which are able calculate the runtime..
Any suggestion?

[MiiNiPaa]

You need to find out execution time of some code?

What problem do you have with calculating time? What don't you like in following pseudocode:

start = current time
Run your function
end = current time
duration = end - start

[DrJones]

The idea was to implement it in the function, since i don't want want to include the the time it take to cout the return value.

But how do i get the current time?

[MiiNiPaa]

i don't want want to include the the time it take to cout the return value.

start = current time
result = Run your function
end = current time
duration = end - start
cout result

If your function does output in addition to calculations, you are violating Single responsibility principle:
http://en.wikipedia.org/wiki/Single_responsibility_principle
http://en.wikipedia.org/wiki/SOLID_%28object-oriented_design%29

But how do i get the current time?

http://en.cppreference.com/w/cpp/chrono