C语言最初是由Dennis M. Ritchie开发UNIX操作系统在贝尔实验室通用的高层次语言。 C语言于1972年开始实现在DEC PDP-11计算机上。

1978年,Brian Kernighan 和 Dennis Ritchie制作首个C语言的公开说明,现在被称为K&R标准。 

现在的UNIX操作系统,C编译器,基本上所有的UNIX应用程序已经使用C语言编写,C由于种种原因已经成为一种广泛使用的专业语言。

  • 简单易学

  • 结构化语言

  • 它可生成高效程序

  • 它可以处理低级别的编程活动

  • 它可以在各种计算机平台上进行编译

关于C的事实

  • C创造来编写UNIX操作系统

  • C是B的语言,是在1970年左右推出的继任者

  • C语言是由美国国家标准协会(ANSI)正规化于1988年

  • UNIX操作系统是在1973年完全用C语言编写

  • 今天,C是使用最广泛的和流行的系统编程语言

  • 大多数国家的最先进的软件都在使用C.实施

  • 当今最流行的Linux操作系统和MySQL的RBDMS都使用C来编写

为什么用C语言?

C语言最初用于系统的开发工作,特别是操作系统的程序。 C语言作为系统开发语言,因为它产生运行几乎一样快用汇编语言编写代码的代码。使用C的一些例子是:

  • 操作系统

  • 语言编译器

  • 汇编

  • 文本编辑器

  • 打印后台处理程序

  • 网络驱动程序

  • 现代化程序

  • 数据库

  • 语言解释器

  • 工具

C语言程序

C程序可以从3行到数百万行,它应该写入到一个或多个文本文件扩展名为“.c”; 例如,hello.c。可以用“vi”,“vim” 或任何其他文本编辑器来编写C程序到文件中。

本教程假设你知道如何编辑一个文本文件,以及如何编写一个程序文件中的源代码。


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