Does C# replace C++?

C# does not replace C++ since it is a language designed for a different purpose. C# is higher-level and managed. It is excellent for working on projects based on frameworks, such as creating web and desktop applications or Unity games. That makes it much friendlier for developers but inappropriate for applications where performance is critical. C++ is lower-level and more raw. It is also unmanaged but it provides more control over system resources. Hence it is preferred for system programming, game engines of complex games, or other high-performance applications.