描述文件的写入和读出操作，以及写注册表和读注册表-Describes the file write and read operations, as well as write the registry and read the registry

读取注册表中的信息，然后显示其中的信息,让你能够查看电脑中的安装程序-Read the information in the registry, and then display the information, so you can check your computer' s setup program