Turbo C

https://en.wikipedia.org/wiki/Turbo_C

"Turbo C is a discontinued integrated development environment (IDE) and
compiler for the C programming language from Borland. First introduced in 1987,
it was noted for its integrated development environment, small size, fast
compile speed, comprehensive manuals and low price."

https://turbo-c.net/

https://web.archive.org/web/20250905023555/https://turbo-c.net/

"Freeware Release: Recognizing the legacy and continued interest, Embarcadero
Technologies (which acquired Borland’s developer tools division) released older
versions of Turbo C++ as freeware. This has allowed enthusiasts and educators
to legally access and distribute the software."

Download:

https://archive.org/details/turbo-c-version-3.0-emulation

The compiler requires the FreeDOS (https://freedos.org/) operating system or an
emulator, such as DOSBox. To use Turbo C, copy directory TC into C:\ or the
directory mounted by the emulator as C:\. Enter directory TC and type
"SETPATH.BAT", then "TC" to start the integrated development environment
mentioned above. To close an opened file press Alt+w and select "Close". To
open a file press Alt+f, select "Open", specify the type of file (*.C, *.CPP
etc.), press Tab and select the file from the available directories. To resize
the window press Alt+w, select "Size/Move", press Shift+arrows to resize, then
Enter. To compile the program and create the executable file press Alt+c and
select "Make". Some suggestive images (TC01.png...TC10.png) are in directory
"DOC".
