DOS 全部常用命令集，可以搜索查看，用起来十分方便-DOS all the common command set, you can search view, is very convenient to use them

用C写的搜索引擎，本程序用TC写的，但开发环境上没找到所以就选的DOS，请大家注意-Search engine using C to write the program written by TC, but did not find it on a development environment on the election of the DOS, please note

HELLO WORLD HOW ARE YOU TODAY C-HELLO WORLD HOW ARE YOU TODAY C++