c语言练习队列数据结构的基本操作，包括对列的创建，队尾插入，对头删除，等练习。适合对队列学习的初级练习者。-Basic Operation c language practice queue data structure, including the creation of a column, insert the tail, head removed, and other exercises. Learning to queue for primary practitioners.

使用C#的WPF与打印机调用打印例子，用打印队列实现打印。利用vc6.0+opencv实现人脸识别(Use C#'s WPF and printer to call print examples and print with a print queue. Using vc6.0+opencv to realize face recognition)