C languages are treated as a building block language to start a career as a programmer. C is known as the mother of all languages. It is a common belief that if you know C, you can learn any other high level language easily and quickly. C clears the fundamentals of programming. It gives a strong base as a developer. As C is close to low level language, you exactly come to know how the procedures are working in the backend. Till date, major parts of windows, Unix and Linux are written in C. So, if you want to program any operating system or want to develop your own, you must learn C.