The donation of the NetBeans C and C++ features from Oracle to Apache has been completed in the 11.3 timeframe, though the code has not yet been integrated. This is anticipated to be a large task and may take some time, involving not only license changes and IP clearance in Apache, though also potentially code changes since not everything that was part of these features in Oracle was able to be donated by Oracle to Apache. Until the code integration is complete, go to the Plugin Manager, enable the NetBeans IDE 8.2 Update Center, which lets you install the NetBeans IDE 8.2 modules providing C and C++ features.