Microsoft Visual C++
The product was first created as an environment for C programming, however it only supported the original C library rather than the C99 revision. In 2013, Visual C++ included support for various C99 features, however it was not until 2015 that Visual C++ included full support of the C99 standard library. The C11 revision that replaced the C99 revision is still not supported in recent versions of Visual C++, however the company has plans to add them in future versions.