VC++通过创建一个链表，循环读取BMP文件数据，再显示在界面上。-VC++ Load BMP image by creating a list

最快的方法，实现断一个链表是否有循环, 打印一个可能带环的链表中所有元素各一次-The fastest way to realize it has broken a cycle of linked list, print a list of possible band in all the elements of the first