VC is the abbreviation of Visual C++ and TC is the abbreviation of Turbo C. The landlord can see the difference between these two names. One is the development environment based on C++, and the other is that only C programs can be developed. They do not represent languages, but development tools. VC is a visual development environment developed by Microsoft for Windows platform developers. It provides some other interfaces and specifications that extend the standard C++ library, such as #pragma instruction. Personally, I think the central idea of VC development environment is MFC class library, ATL component and visual resource editor. With these, it is more convenient to develop Windows window programs or Windows services, dynamic libraries and controls. Because it integrates many specifications and mechanisms defined by Microsoft. Therefore, it is more convenient to develop Windows programs than TC. However, the knowledge required is several times or even dozens of times that of TC developing command-line programs, so the threshold is relatively high.