使用管道实现父子进程间的通信(c语言编程)；判断闰年，比较两个数的大小，文件IO操作-Father and son use the pipeline to achieve inter-process communication (c language programming) judge a leap year, compare the two the number of size, file IO operation

查看磁盘更新文件,以比较是否有病毒更改了磁盘内容,防患于未然,呵呵.不太懂编程哈,理解哈.-Check disk update files, to compare the disk for viruses to change the content and take preventive measures, huh, huh. Do not understand programming Ha, ha understood.

在资源浏览器的右键菜单中添加“计算此文件的CRC32值”菜单项，当选中此菜单时，显示该文件的CRC32值，可用于快速比较2个文件是否相同（如果2个文件相同，其CRC32肯定相同，反之不成立，但概率很小。可用于粗略比较，好处是比直接比较2个文件方便，而且速度快。）-Add in the Explorer s right-click menu "CRC32 value for this file" menu item, when elected in this menu displays CRC32