队列，堆栈的源代码，已经经过测试，代码正确，只有简单的注释说明。 对学习数据结构的初学者对指针的理解有很大的帮助。-The source code of the queue, stack, has been tested, the code is correct, only simple notes. A great help for beginners to learn the data structure of pointers to understand.