I am using Codeblocks 17.12 and have already set compiler settings to C++11 standard. I am studying from Bjarne Stroustrup\'s book \"Programming - Principles and Practice us
There is an updated version of that file that works fine for the most recent revision of the ISO/IEC 14882 standard, namely C++17.
https://github.com/BjarneStroustrup/Programming-_Principles_and_Practice_Using_Cpp/blob/master/std_lib_facilities.h
You don't need that line:
#include
Hope you have not quit learning C++ with that wonderful book!