Welcome to SO, asdf. SO is a place where programmers help programmers make source code work. This question has no source code. Please take time to review the information at stackoverflow.com/help to understand how SO works. SO is not a free, bespoke coding service that is taking orders. Please copy and paste into the question the source code as text you are trying to make work. No pictures. — lit just now

Professional programmers in C or C++ never use the naive "primite data types" such as int or long. In either language, you use stdint.h types. And yeah there are lots of unprofessional/incompetent C and C++ programmers out there... simply because there's been 50 years during which we've built up a vast incompetence knowledge base with gems such as POSIX and the Winapi type system. What major codes bases are written in Rust, though? — Lundin 44 secs ago

Dear Google Support Team, I hope this message finds you well - Are you aware where you posted this? Maybe not, but this is Stack Overflow, a public Q/A site for programmers, not the Google support. — jps 28 secs ago

here seems like better place: softwareengineering.stackexchange.com — LhasaDad 26 secs ago

Basically, although Java allows you to specify multiple non-public files in a single source file (it can have one public class, which must have the same name as the file without extension), this is generally not done. Java programmers generally prefer and expect a single class per file. — Mark Rotteveel 15 secs ago

You should not have OpenGL functions in multiple threads. AFAIK this is not supported. Having OpenGL code in a networking threads is not a good idea either in term of software engineering (separation of concerns is critical for a maintainable code). The render thread can do all rendering operation and the networking thread can do all network operation. If you need to communicate between threads, then use queues (which can be either atomic or protected by locks). — Jérôme Richard 34 secs ago

C programmers often say that it is not possible to write an equivalent of malloc in conformant C. For the very same reason: at a moment you must find some memory and decide that 1/ it initially has no type and 2/ you can bless it into one type. But for safety reasons user level programs are not allowed to do that. — Serge Ballesta 10 secs ago

Option 1) Learn shell scripting 2) Find a programmer who can (and will) understand your script. Stackoverflow is not a free code solving problems website for non-programmers. 3) (tip for the programmer you might find):; rewrite the script using vnstat --oneline b — Luuk 27 secs ago

From the stackoverflow/tour page: Stack Overflow is a question and answer site for professional and enthusiast programmers — Luuk 12 secs ago

"Premature optimization is the root of all evil." You can speculate about what might be a performance issue, or you can implement a proof of concept and test it. You might be trying to fix an issue that will never exist. Or might exist, but will remain small enough that it's tolerable. Part of software engineering is implementing prototype code so you can test it and then know whether it works or not, and with what performance behavior. Then decide what optimization is needed. — Bill Karwin 36 secs ago

Side note: Remember that >> also STOPS reading on whitespace. If the name entered is "John Smith", cin >> name will read "John" into name and leave " Smith" (note the space!) to be found by a future read. To get "John Smith" you would need cin >> first_name >> last_name, but this leads to little booby traps with names like "Victor von Doom". Often you'll find yourself wanting to read names by sucking in an entire name with getline and praying you don't have to think too hard about how to interpret it — user4581301 25 secs ago

More of a question for softwareengineering.stackexchange.com — Estus Flask 21 secs ago