Notepad/enter/Coding Tips (Classical)/Terminal Tips/2. CLI Tools/Languages/Low level - Back-end/C - write NASA CODE.md

Of course the C Programming Language was one of the first languages taught at UCONN. And I still don't like it. Or really know it. Pointers can get confusing. But it's just the way that it goes. 



![https://www.youtube.com/watch?v=GWYhtksrmhE](https://www.youtube.com/watch?v=GWYhtksrmhE)

# cc65

For game tank games, use [cc65](https://cc65.github.io) which is a 6502 C compiler, whatever that means. 
	-  cc65 is a complete cross development package for 65(C)02 systems, including a powerful macro assembler, a C compiler, linker, librarian and several other tools.

- cc65 has C and runtime library support for many of the old 6502 machines, including

- the following Commodore machines:
    - VIC20
    - C16/C116 and Plus/4
    - C64
    - C128
    - CBM 510 (aka P500)
    - the 600/700 family
    - newer PET machines (not 2001).
- the Apple ][+ and successors.
- the Atari 8-bit machines.
- the Atari 2600 console.
- the Atari 5200 console.
- GEOS for the C64, C128 and Apple //e.
- the Bit Corporation Gamate console.
- the NEC PC-Engine (aka TurboGrafx-16) console.
- the Nintendo Entertainment System (NES) console.
- the Watara Supervision console.
- the VTech Creativision console.
- the Oric Atmos.
- the Oric Telestrat.
- the Lynx console.
- the Ohio Scientific Challenger 1P.
- the Commander X16.
- the Synertek Systems Sym-1.



~~ so retro ~~~


# Pure C TOTP

Yet another simple token generator written in pure C

[Here is the github link. ](https://github.com/fmount/c_otp/tree/master)

This is a simple (re)implementation of the **TOTP Token generator** written in Pure C and following the references:

- [RFC6238](https://tools.ietf.org/html/rfc6238)
- [RFC4226](https://tools.ietf.org/html/rfc4226)

It doesn't expose any external api, you can just build it and use with the most popular provider that implement the RFC specification.