OpenMP + Visual C++ is it really that simple?

Question

C++ / C#

Is it really enough to simply add in the code before the for loop: And it will automatically calculate it by cores. How can I check if this works in visual studio 2015. Where can I see how many threads?
#pragma omp parallel for

Answer 1

Open the task manager while computing and see.
In addition to this directive, some adaptation of the algorithm may be required - it depends on the task.