Timing in an elegant way in c++

Question

I am interested in timing the execution time of a free function or a member function (template or not). Call TheFunc the function in question, its call being

Answer 1

With variadic template, you may do:

template 
double Time_function(F&& f, Ts&&...args)
{
    std::clock_t start = std::clock();
    std::forward(f)(std::forward(args)...);
    return static_cast(std::clock() - start) / static_cast(CLOCKS_PER_SEC);
}