Although numerous computer languages are used for writing computer applications, the computer programming language, C, is the most popular language worldwide. Everything from micro controllers to operating systems is written in C since it's very flexible and versatile, allowing maximum control with minimal commands. OK, obviously C++ is still one of the most widely used languages and it will continue to be in 2020. The combination of performance and abstraction it offers has made it useful in many domains where the only alternative would be C. In cases where C is the only alternative, well, C++ can seem pretty appealing.