DOS下播放CD光盘的程序，此程序用了别人部分源码，我进行了改进！-DOS broadcast CD procedures, this procedure with the other part of the source code, I had to improve.

C语言命令行编程源代码，需要在DOS环境下看出功能，不过是一个学习老的编程思想的好例子！-command line C programming language source code in DOS environment to see functional, but old is a learning program with the idea of a good example!