What is the uses of C programming?

Question

what is the uses of C programming, like HTML is used to web development and where is C programming used?

Answer 1

hacking, cracking, cyber security, passcode and lot more......

Answer 2

C has a rather long history and allows low-level access to memory, provides programming functionality close to machine instructions (at least compiler can map c language efficiently to machine instructions) and it was designed for cross-plattform programming. This means standard compliant c code is portable. It became one of the most used programming languages ever. It is widely used for system programming, this means operating systems. As the code has to be compiled it is used whenever speed is key. Saying this a lot of other programming languages (php, python, to name just 2), compilers, but also interpreters and many libaries are written in c.