Haiku is written in C++ and provides an object-oriented API. https://en.wikipedia.org/wiki/Haiku_(operating_system) https://en.wikipedia.org/wiki/Haiku_(operati

Haiku is written in C++ and provides an object-oriented API. https://en.wikipedia.org/wiki/Haiku_(operating_system) https://en.wikipedia.org/wiki/Haiku_(operating_system)