C was built by Dennis Ritchie in 1970's at Bell Technology Labs to help him make UNIX operating system. His works made Unix more portable and improved as programmers of C find this new language easier to implement than its predecessors.
Now, C is used not only to create system applications inclusive of which are operating systems and embedded systems, but also, application software.
With C's excellent features and capability, it is widely known and had grown successors, which for one is JAVA to address wider functionality of applications.
See full history of C. . .