C language is an internationally popular, very promising computer high-level language. It is suitable as a system description language, can be used to write system software, but also can write application software.
Early operating systems and other system software are mainly written in assembly language (including the UNIX operating system). Because the assembly language relies on computer hardware, the readability and portability of the program are poor. To improve readability and portability, it's best to use a high-level language However, the general high-level language is difficult to implement some of the assembly language functions (assembly language can directly operate on the hardware), such as: the operation of memory address, bit operation, and so on. It is envisaged to find a language that has both general and low-level linguistic characteristics, and combines their advantages. So, The C language was born in this situation.
The development history of C language 3