The Free On-line Dictionary of Computing (30 December 2018):
Borland's Ccompiler for IBM PCs.
Turbo C, version 1.0, was introduced by Borland in 1987. It
offered the first integrated edit-compile-run development
environment for C on IBM PCs. It ran in 384KB of memory.
It allowed inline assembly, supported all memory models, and
offered optimisations for speed, size, constant folding, and
Version 1.5 shipped on five 360 KB diskettes of uncompressed
files, and came with sample C programs, including a stripped
down spreadsheet called mcalc.
Turbo C 2.0 has a debugger, a fast assembler, and an extensive
Turbo C has been largely supplanted by Turbo C++, introduced
circa September, 1990 for both MS-DOS and Microsoft
["Compiling the facts on C", Richard Hale Shaw, PC Magazine,
September 13, 1988, pages 115-183].