C function to convert strings.一个实用的C处理函数。-C function to convert strings. A practical C. handling functions.

操作系统著名源代码，含系统调用，生产者与消费者源码，有详细注释，如果出现乱码，请转换格式为unicode。-Well-known operating system source code, including system calls, producers and consumers source, there are detailed notes, if there is garbled, please convert the format of unicode.

pdu Decoder is use to convert Pdu to text

A simple Tab convert to space program use C on DOS