Type: Programming language

Briefly explainedC is one of the classic programming languages. Almost all operating systems are based on it. C and its extension C++ are particularly suitable for hardware-related programming, since they are translated into machine code. Thus, in addition to operating systems, very performant applications and games can be programmed. 

Known companies that use C:

• Microsoft: Windows operating system
• Apple: Operating systems like macOS and iOS
• Adobe: Photoshop and Illustrator