How much and where C++ is being used

Question

I want to know about C++

Answer 1

C++ is widely used for game Development. It is also used of app devemopment.
C++ is used very much in game companies for coding there game as it is the second fastest programming language available till know(C is the fastest).
The games made with C++ have very high performance level than C# games but still making anything with C++ is a hard work than C#.

Answer 2

Also some operating systems.

Answer 3

Embedded systems, console games, performance critical enterprise software.