Ｃ语言是一种结构化语言。它层次清晰，便于按模块化方式组织程序，易于调试和维护。Ｃ语言的表现能力和处理能力极强。它不仅具有丰富的运算符和数据类型，便于实现各类复杂的数据结构。它还可以直接访问内存的物理地址，进行位(bit)一级的操作。由于Ｃ语言实现了对硬件的编程操作，因此Ｃ语言集高级语言和低级语言的功能于一体。既可用于系统软件的开发，也适合于应用软件的开发。-C language is a structured language. It is level, clear and easy modular approach according to organizational procedures, easy to debug and maintain. C language, strong performance capabilities and processing power. It not only has a rich operators and data types, is easy to realize all kinds of complex data structures. It can also directly access the physical address of the memory to carry out bit (bit) an operation. As the C language to implement the hardware programming operation, so C-set high-level language and low-level language functions in one. Can be used for system software development, is also suitable for application software development.