2021
https://mostsignificant.github.io/c++/2021/11/03/3-ways-to-parse-command-line-arguments-in-C++-quick-do-it-yourself-or-comprehensive.html
https://medium.com/@mostsignificant/3-ways-to-parse-command-line-arguments-in-c-quick-do-it-yourself-or-comprehensive-36913284460f