The full manual cover photo at the top of the page shows that it was published by Optimized Systems Software for Atari.
I think most Atari users interested in C or C-like programming would have, instead of a C interpreter like Tiny-C, used a) Deep Blue C <https://en.wikipedia.org/wiki/Deep_Blue_C>, or b) Action! <https://en.wikipedia.org/wiki/Action!_(programming_language)>. Both are compilers with complete library support to Atari hardware features; as I understand it, they are superior to any high-level language available for Commodore 64, and comparable to the various BASIC compilers for Apple II such as Microsoft's TASC.
alt Hacker News
The full manual cover photo at the top of the page shows that it was published by Optimized Systems Software for Atari.
I think most Atari users interested in C or C-like programming would have, instead of a C interpreter like Tiny-C, used a) Deep Blue C <https://en.wikipedia.org/wiki/Deep_Blue_C>, or b) Action! <https://en.wikipedia.org/wiki/Action!_(programming_language)>. Both are compilers with complete library support to Atari hardware features; as I understand it, they are superior to any high-level language available for Commodore 64, and comparable to the various BASIC compilers for Apple II such as Microsoft's TASC.