C++ Std:.endl Code Example

Example: std ::endl

#include <iostream> #include <chrono>   template<typename Diff> void log_progress(Diff d) {     std::cout << std::chrono::duration_cast<std::chrono::milliseconds>(d).count()               << " ms passed" << std::endl; }   int main() {     std::cout.sync_with_stdio(false); // on some platforms, stdout flushes on \n     volatile int sink = 0;       auto t1 = std::chrono::high_resolution_clock::now();     for (int j=0; j<5; ++j)     {         for (int n=0; n<10000; ++n)             for (int m=0; m<20000; ++m)                 sink += m*n; // do some work         auto now = std::chrono::high_resolution_clock::now();         log_progress(now - t1);     } }