The C programming language was developed in the 1970s as a fairly unconventional systems and operating systems development tool, but has, through the course of the ISO Standards process, added many attributes of more conventional programming languages and become less suitable for operating systems development. Operating system programming continues to be done in non-ISO dialects of C. The differences provide a glimpse of operating system requirements for programming languages.

翻译：C编程语言是1970年代开发的,是一种相当非传统的系统和运作系统开发工具,但通过标准化组织标准进程,增加了许多传统编程语言的特性,不再适合操作系统开发,操作系统方案编制继续采用C类非ISO方言。 这些差异为编程语言提供了操作系统要求的一瞥。