simple_hackerrank_profiler.cc

std::chrono::time_point<std::chrono::high_resolution_clock> p1;
std::chrono::time_point<std::chrono::high_resolution_clock> p2;
std::string tag;

#define START_PROFILE(t) tag = t; cout << "start " << tag << std::endl; p1 = std::chrono::high_resolution_clock::now();

#define END_PROFILE() p2 = std::chrono::high_resolution_clock::now(); cout << "end " << tag << " " << std::chrono::duration<double, std::milli>(p2 - p1).count() << std::endl;