Borland Turbo C++ 4.5
Turbo C++ is a C++ compiler and integrated development environment (IDE) from Borland. The original Turbo C++ product line was put on hold after 1994, and was revived in 2006 as an introductory-level IDE, essentially a stripped-down version of their flagship C++ Builder. Turbo C++ 2006 was released on September 5, 2006 and is available in 'Explorer' and 'Professional' editions.
The Explorer edition is free to download and distribute while the Professional edition is a commercial product. The professional edition is no longer available for purchase from Borland.