Is C programming still used in 2021?

Short answer, yes, C is still worth learning . It is not an absolute requirement, but it’s hard to escape coming across C. It’s good to know it, regardless of whatever other programming languages that you learn.

C is used for systems programming (operating systems, device drivers, compilers, embedded applications, etc.). This goes back more than four decades when C was used to write the Unix operating system. C was also used to write the Linux operating system.

Yes, a lot of people and projects still use C . Entire operating systems are written in C (Linux), Device Drivers, networking libraries and quite a lot of embedded system software is written in C.25 Oca 2019

Is Embedded C still relevant in 2021? No. In 2021 we use only Regular C on Embedded Systems .