http://www.cplusplus.com/doc/tutorial/
    !!!
https://www.learncpp.com/
    !!!
http://mycpp.ru/cpp/book/
    !!! good, but lengthy
https://metanit.com/cpp/tutorial/3.5.php
    https://metanit.com/cpp/tutorial/4.1.php
    ! ptr

https://www.tutorialspoint.com/cplusplus/index.htm
https://www.geeksforgeeks.org/c-plus-plus/

http://cpp.com.ru/lippman/index.html

http://www.icce.rug.nl/documents/cplusplus/

https://github.com/changkun/modern-cpp-tutorial
https://changkun.de/modern-cpp/
https://changkun.de/modern-cpp/en-us/00-preface/

http://cppstudio.com
http://cppstudio.com/cat/274/

2019
https://coderlessons.com/tutorials/kompiuternoe-programmirovanie/vyuchit-c/kratkoe-rukovodstvo-po-c
    ! so-so