C语言本身虽然是极为灵活的语言，但是做为软件工业化生产的要求，却需要编程者遵循严格的规范。规范的目的，一是在于保证代码的可读性，二是在于保证代码的可维护性-The specification of the C programming language, code format and usage rules. C language itself is a very flexible language, but as the software requirements of industrial