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Lessons on development of 64-bit C/C++ applications (conversion from 32-bits into 64-bits)


Resource contributor
On my path to find (online) material to help refresh my ancient (ANSI / Turbo) C_Coding skills,
I landed on this wonderful PVS-Studio webpage about 64-bits coding - lessons:


Here are the links to the relevant 64-bits lessons
- https://www.viva64.com/en/pvs-studio/ - Homepage
- https://www.viva64.com/en/l/full/ - All 64-bits related articles in 1 big web-page
- https://www.viva64.com/en/l/ - all 64-bits articles separate

I'll hope you will enjoy the articles :)


Resource contributor
Hi Ronald!

I would not worry about writing code for 32bit or 64bit so much, unless you are writing in a language like Assembly. Assembly you deal directly with the CPU's registers and there for have to take into account if your system is 32bit or 64bit. But most of the languages used for programming now are very high level programming languages. They are more text based, so that we the programmer can read the code more easily. And then we use a compiler to re-write the code into a language that the CPU's will understand.

So in short don't sweat it! Just concentrate on learning the logic of what programming is and the syntax of the language you decide to use.

Hope this helps you!

Thanks, Kris


Resource contributor
unless you are writing in a language like Assembly.
This topic might appear on my low-level coding agenda in the near future, Kris.

Thanks for your reply.
Last edited:


Resource contributor
@krispy1001 If he is going to use C++ then he does have some quirks to deal with in the x64 vs x86 environment. Specifically when casting pointers into integers. You can't cast them into UINT32 or DWORD in the x64 environment or you will end up with memory access violations. Secondly, he will have to use separate libraries for x64 vs x86. But otherwise there is no concern.