After installing Visual Studio 2015, when I go to File -> New Project, I cannot find any project templates related to Visual C++. How can I get them?
If you have an MSVS update 3 installed then you may have face with one of the problem of this update. See more here Visual Studio 2015 Update 3 Known Issues. Here is a quote from this document
In some cases, applying Update 3 can cause the optional feature selections for Visual C++ (e.g. Common Tools for Visual C++ 2015) to become deselected and uninstalled.